Replacing coolant and temperature sensor in Renault Logan

The cooling system in a car is designed to maintain the ideal temperature of the internal combustion engine during operation. That is why most car enthusiasts pay special attention to the quality and timing of antifreeze replacement. Today, the market offers many different types of this coolant, which have varied characteristics and composition. However, before you start replacing, you should carefully study what the manufacturer recommends. Such a manual not only describes in detail the interval for replacing the coolant, but also gives recommendations for selection.

In this article we will tell you in detail how to change antifreeze on one of the most popular cars on Russian roads - Renault Logan.

Replacement frequency, what antifreeze to fill

The original Renault Glaceol RX Type D antifreeze is suitable for all cars produced by this company. You can also use Coolstream NRC; it has official approval and is also used for filling on conveyors located in Russia.

If necessary, you can look for analogues that meet the requirements of the RENAULT specification 41-01-001/-T Type D or with Type D approval.

Sometimes Logan owners use regular G12 or G12+ antifreeze, although the automaker does not make such a recommendation. Therefore, it is difficult to say how they will behave and whether there will be problems when using them.

What color is Logan 2 antifreeze?

Antifreeze for Renault Logan 2nd generation

How to add new coolant to the system

To pour antifreeze into the reservoir, use a simple watering can. Pour in antifreeze until the mixture begins to flow out of the open hole of the fitting. It is necessary to carefully observe the entire process so as not to miss this moment. Then close the hole and add a small amount of antifreeze to the reservoir.

After replacing the coolant in a Renault Logan car, you will have to release the air remaining inside the system

. This is quite easy to do, especially if you follow the following recommendations:

• make sure you secure everything well;
• start the car and let it run for several minutes at low speeds (the engine temperature should not exceed 40 degrees);
• turn off the engine;
• Carefully unscrew the cap on the tank. This way you will be able to get rid of excess pressure inside the system;
• open the fitting. When liquid begins to flow out of the hole, screw the plug into place;
• get rid of air in the heater radiator. To do this, start the car again and let it run for a while at high speeds (up to a maximum of 2,000 rpm). Do not forget to monitor the temperature sensors so as not to overheat the power unit;
• open the fitting. Wait a little and screw again. You will have to repeat this procedure several times (but no more than 3).

It is important to know

• If there is air left in the system, this may affect the operation of the stove. This can also be indicated by frequent temperature jumps, which can be seen on the corresponding sensors.
• The cooling system should only be filled with the liquid recommended by the Renault manufacturer for Logan, Sandero or some other brand.
• It is not recommended to use domestic antifreeze to replace fluid on foreign cars.

Probably, most drivers want to know how to replace antifreeze in a Renault Logan. In fact, there is nothing complicated in this procedure.

, so you can handle it yourself. If you have any doubts, it is better to take the car to a technical station.

How to choose antifreeze for Renault Logan 2: replacing coolant in service conditions

Neither a driver with many years of experience nor a novice will argue about how important the use of antifreeze is in Russia and the importance of its timely replacement.

However, not everyone is familiar with which fluid is best to use on Renault Logan 2 and how to fill it correctly (the procedure for foreign cars of the latest models is somewhat different from domestic cars).

In this regard, our car service specialists will tell you more about this.

When antifreeze on Renault Logan 2 becomes unusable, replacement is necessary

When should I replace this car?

The manufacturer recommends changing the antifreeze fluid after every 90 thousand kilometers.

Although the latest brands allow you to increase this period (up to hundreds of thousands), you should trust your eyes more, that is, check. If the color of the antifreeze has changed, there is no need to delay.

This can happen after a couple of years - it all depends on the condition of the fuel system and cooling system and their operating conditions.

The fact that the life of the old liquid has been exhausted is indicated by its color and smell:

1. Antifreeze becomes cloudy and darker.
2. It will give off a stronger smell.

What does the technician use to replace antifreeze, besides the liquid itself? The tools are listed below:

• pliers;
• screwdriver;
• standard set of keys;
• container for draining old antifreeze;
• protective gloves (you can just use cloth ones, but rubber ones are better);
• funnel for filling.

Also, an experienced master will always have a rag or rags on hand. Maintaining cleanliness and accuracy in this matter is one of the primary tasks.

But the main thing is not so much the presence of the tool itself, but experience. This will eliminate mistakes that lead to dire consequences.

What happens if you use the wrong liquids?

To increase the effect, some car enthusiasts who independently replace antifreeze allow mixing of different types. It is highly not recommended to make a mixture containing organics and carboxylic acids. Example: in our car service center they will never mix G-11 and G-12. At the client's request, a mixture of G11 and G12+ can be prepared. Otherwise:

1. The service life of the liquid itself is reduced.
2. Over time, the risk of corrosion increases, which can lead to dire consequences:
   thermostat failure;
3. clogged radiators and engine channels;
4. wear of bearings and water pump impeller, etc.
5. the engine will overheat, which means it will wear out, lose power and consume more fuel.

How does our service center replace the coolant on Renault Logan 2?

It is unlikely that the motorist is familiar with some of the nuances of the operation itself, or he will be able to carry out some stages on his own. For example:

1. When draining old antifreeze to Logan 2, a problem arises - a small sediment remains in the radiator. Our car service uses its own secrets for complete removal: washing, squeezing clamps, blowing out the tank and thermostat with a compressor. The system will be clean. After emptying, new clamps are usually installed.
2. To reduce pressure, remove engine protection, commutations, etc., and also to speed up the process, a special tool is used.
3. After pouring in new fluid and topping it up after running through the system, the technicians remove excess air from it so that there are no traffic jams and there are no temperature surges.

DANGEROUS! If a car enthusiast does this on his own, then when removing the blockage of the tank to reduce pressure, he runs the risk of scalding his hands with heated antifreeze.

Selecting replacement antifreeze also requires experience

For the first Logans, TOTAL antifreeze (GLACELFAUTOSUPRA TM) was used; for the second generation, when delivered to the market, GLACEOLRX Type D from the ELF brand is filled. It is initially diluted with distillate. The manufacturer recommends both of these types for filling into Logan 2 with 1.4 or 1.6 liter engines. The volume for refilling the system corresponds to 5.5 liters.

A little more about type “D”. It complies with G-12 standard:

• Cool Stream 4030 Premium;
• Glacelot RX (Type D).

They can be either ready-made or in the form of concentrates.

Also, for Renault Logan 2, according to the manufacturer’s recommendations, our car service uses antifreeze (depending on the year of manufacture) from: MOTUL, Freecor QR, Freecor DSC, VAG, Castrol Radicool Si, FEBI, Zerex G, Glysantin (all type G12++).

If a concentrate is used, it is diluted in advance with distilled water. Our car service offers liquids that remain effective after dilution 50x50 to 40 degrees below zero. If the average ambient temperature in winter is different, the master can change the proportions.

Renault Logan 2 requires about 3 liters for dilution, or 6 liters of finished liquid. It and the distillate itself are supplied to the car service center from an official dealer.

Low prices and quality guarantee

There are some nuances that affect the effectiveness of the procedure. For example, a specialist never starts replacing antifreeze the minute the car is delivered to the service center. The engine must be completely cool during operation.

Also, before replacement, excess pressure is removed from the system. A drain container is installed under the removed pan. And without following safety precautions, you can easily get injured.

And besides, when doing independent repairs, the search for the necessary materials is inevitable, the question arises about the advisability of using one or another antifreeze for a certain car model, a loss of money and time.

All this can be avoided by contacting a car service center.

We have:

• professionals work;
• non-freezing liquid is selected without errors from the catalog;
• the procedure itself takes a little time;
• the next antifreeze replacement will be required for a very, very long time;
• Additionally, at your request, diagnostics and repair of other components and mechanisms can be carried out;
• All work is guaranteed.

Contact us, quality is guaranteed!

Source: https://zet-avto.ru/remont-avto/renault/kak-podobrat-dlya-reno-logan-2-antifriz-zamena-okhlazhdayushchey-zhidkosti-v-servisnykh-usloviyakh/

Preparation

If we talk about volume, then you will need a volume of 5.5 liters for a car with air conditioning and 4.5 liters without it. Also prepare all the necessary tools:

• a set of open-end and ring wrenches;
• several flat screwdrivers and pliers;
• funnel and container for waste composition with a capacity of 7 liters;
• special clothing and high-quality lighting.

If everything is ready, you can study in detail the question of how to replace antifreeze on a Renault Logan. All operations are carried out only on a cold engine. If you purchased G11/G12 class products, be sure to use gloves. Let us remind you that these coolants are made on the basis of ethylene glycol, which is a toxic substance.

Recommendations for preparation

For Renault Logan, the French automaker has established regulatory deadlines for replacing the coolant for the internal combustion engine: either after 6 years of driving the car, or after 90,000 km. However, it is advisable to replace the antifreeze after 60,000 km, when a sharp, repulsive odor appears and the color of the liquid changes to dark brown. To replace antifreeze on a Renault Logan, you should use a number of consumables and the following set of tools:

• ordinary open-end and ring wrenches;
• pliers;
• screwdriver;
• for draining waste, a wide basin of 6 liters;
• watering can, or cut off top of a plastic bottle;
• cloth gloves;
• rags as rags.

Many car owners also use a coolant temperature sensor; it will allow you to keep everything under control.

Replacing the coolant should be carried out according to the instructions; to do this, the car should be driven into a pit, this will be more convenient. In the absence of one, the frame of the oil pan is unscrewed in conditions where it will be necessary to literally lie under the car. All work is performed on a cold engine. Before starting the procedure, and in this case it is replacing antifreeze, it is necessary to release excess air from the cooling system by removing the cap covering the filler neck of the expansion tank. The air will begin to come out with a whistle, and then you should screw the lid back on. Structurally, the Renault Logan sedan does not have fittings or other openings designed specifically for draining antifreeze, so you will have to remove the suitable cooling system pipes, first the lower hose from the radiator. Before this, it is necessary to dismantle the crankcase protection, and place a trough under the radiator itself to drain the waste. If the procedure is performed in a pit, you should throw a board over it, which will act as a support for the container. Without this, replacing the coolant is impossible; this is worth remembering for those drivers who want to carry out such a procedure as replacing antifreeze on their own. However, more experienced drivers can handle this easily, especially those who use a coolant temperature sensor.

How to drain old coolant

Before replacing antifreeze begins, Renault Logan 1.6 must be installed on the most level surface possible. Then remove the crankcase protection. You will also need new clamps for the pipes. They should be replaced if they have been in use for a long time and show signs of corrosion. Experienced car owners recommend changing the clamp at every replacement, as there is an opinion that this is a one-time item. To drain the coolant, you need to remove the pipe.

To remove it, unscrew the tight-fitting clamp. Then the hose is very carefully disconnected from the fitting and placed in a previously prepared container. You need to be prepared for the fact that used antifreeze will flow from the fitting - the flow will come from two points at once. This is, in fact, a pipe and a radiator. To ensure that antifreeze flows out actively, remove the cap from the expansion tank. Also remove the plug valve on the pipe that fits into the thermostat housing.

Replacement features

Preparation

What you need to prepare in order to cope with the process of changing the coolant as quickly and conveniently as possible:

• the refrigerant itself;
• clean rags;
• container into which you will drain waste consumables;
• pliers.

Step-by-step instruction

1. The work of changing the coolant must be carried out on a cold engine. Therefore, let the engine cool down, after which you need to relieve the pressure in the cooling system. To do this, open the hood and find your expansion tank. Remove the lid from it: this will release the pressure.
2. Now you need to remove the engine protection. In Renault Sandero models, the developers did not provide holes for draining consumables in the engine and radiator. Therefore, place a previously prepared container under the radiator.
3. To begin the process of draining the antifreeze, you will need to disconnect the outlet pipe from the lower radiator hose, having previously removed the clamp securing it.
4. Disconnect the clamp: to do this, use a flat-head or Phillips screwdriver and unscrew the fastening screw.
5. Now you can remove the outlet pipe from the hose and drain the used consumables.
6. To increase the intensity of draining spent consumables, you can remove the fitting cap, which is installed on the coolant supply pipe to the heating device.
7. When the antifreeze has completely drained from the system, put the radiator hose outlet pipe back in place and secure it with a clamp. There is a possibility that the old clamp will not be suitable for reuse, so you will have to buy a new one. Instead of the standard clamp that was installed, you can use a worm clamp.
8. Now you need to pour coolant into the engine cooling system through the expansion tank. Pour in antifreeze until it begins to flow out of the air bleeder fitting. When this happens, replace the fitting cap. Also tighten the expansion tank cap.
9. Start the engine. When the engine warms up, the lower radiator hose should be cold for some time, after which it will quickly begin to heat up. This indicates that coolant circulation has begun in a large circle in the cooling system. When the system fan turns on and starts working, the motor must be turned off. When the engine has cooled down a bit, check the antifreeze level. If necessary, add consumables to the system.
10. It would also be a good idea to check the condition of the pipes and joints for leaks. If the liquid has just been filled, this is even easier to do: you will see the places where there is a leak immediately, since they will be highlighted with the color of the antifreeze being poured.

The order of steps for changing the coolant. mixtures

1. Crawl under your car, then you should unscrew the so-called engine protection and remove the inner shield. This shield protects the left side of the engine from dirt getting into it. After this, place a canister under the drain to collect the mixture.
2. Completely unscrew the drain plug of the engine cooling mechanism. Next, you need to unscrew the top part of the filler tank.
3. You can also partially unscrew the plug (if the pressure level drops, unscrew it entirely).
4. After draining the mixture from the radiator, screw everything back in as before. Loosen the compression force of the valve on the internal pipe, then drain the remaining mixture from the engine.
5. Using a pump or syringe, it is worth pumping out the old antifreeze from the expansion tank and pouring in fresh one.
6. Fill with fresh mixture until the mixture flows out. Next, simply close the lid.

After replacement, check the overall antifreeze level. If there is not enough antifreeze in the tank, bring it to the “F” mark.

• If on a heated engine there is no warm flow from the internal heater, this may indicate the appearance of a water/air plug in the cooling system. If the air is a little warm when the engine is running, then the fan is faulty, but if it is cool, there is a plug in the coolant mixture.
• Loosen the compression force of the valve on the internal radiator pipe, then unscrew it and drain the remaining mixture from the engine.

As can be seen from the text above, replacing antifreeze in a Renault Logan 1.6 8-valve version is essentially a fairly simple procedure. Doing this work on your Logan yourself gives you new knowledge and allows you to save money on repairing your car. This is also an overall great opportunity to get to know your car and see it in a new light.

The above instructions will allow the user to carry out re-solidification of antifreeze on their own without the help of people. Now you know how to do it. As a result, you also get the opportunity to save your money and, in the future, carry out this work more confidently.

Recommendations

1. When changing antifreeze with flushing, you should remember that after draining, about a liter of liquid will remain in the system. If the system was washed with water, then this must be taken into account when diluting the concentrate and subsequent filling with antifreeze.
2. If chemical flushing was used, first such flushing is drained, then the system is flushed with water, and only then antifreeze is added.
   We also recommend reading the article on how to flush the oil system before changing the engine oil. From this article you will learn about available methods for flushing the engine lubrication system.
3. To check if there are air pockets in the system, the heater is turned on on a warm car. If the coolant level is normal, but the heater blows cold, you need to remove the air lock.
4. After short trips in the first days, you need to monitor the antifreeze level.
   The fact is that the level can drop sharply if air pockets remain in the system. It sometimes happens that after replacing antifreeze, the driver may encounter certain malfunctions of the cooling system. For example, leaks may occur. This occurs if sediments have clogged microcracks, but after using chemical washes, such natural “plugs” are washed out.

You may also encounter the fact that after unscrewing and reinstalling the expansion tank cap does not relieve pressure in the system, the valves in the cap do not work. As a result, antifreeze flows through the cap. To avoid such problems, it is better to change the expansion tank cap every 2-3 years or always prepare a new one before replacing antifreeze.

Preparing to fill coolant

After the antifreeze stops leaking, you need to put new clamps with a worm tightening mechanism on the hoses and put the hoses in their original place, after wiping the connection points from dust and dirt with a cloth.

After this, you can fill in new fresh coolant.

Since 2009, the Renault plant has used Glaceol RX Type D as antifreeze, produced under the ELF brand, which is painted yellow and obtained from a concentrate diluted with distilled water in a 1:1 ratio. It is recommended for use in Renault Logan with 1.4 l or 1.6 l engines.

If your Renault Logan has problems with engine cooling, then the first thing to suspect is the thermostat. Watch the video to see which thermostat company to install for Logan.

Preparing to replace antifreeze on Renault Logan

When the liquid acquires a dirty color and begins to smell sharp and unpleasant, you need to change it. This can happen already at 50 - 60 thousand mileage.

The question immediately arises of which antifreeze to choose. On this topic, see the test from the Main Road .

Let us add on our own that good antifreeze should not cost less than $1 per kilogram and the manufacturer’s brand should be familiar at least by hearsay.

Some of the best brands are Liqui Moly Langzeit GTL12 Plus, SINTEC LUX G12, Felix Carbox G12. You can also pay attention to the companies Shell, Texaco, Total, Lukoil and BASF.

Remember that the color of the coolant does not affect anything because they are all colorless fluids to begin with. Giving them blue or green is at the discretion of the manufacturer.

We list the tools that you will need to replace antifreeze on Renault Logan.

You will need tools and materials

• antifreeze 5.5 liters;
• any set of open-end or ring wrenches;
• pliers;
• slotted screwdriver;
• worm clamps with a diameter of 35 - 50 mm - 4 pcs.;
• a basin or cut-off low plastic canister with a volume of 6 liters for draining bad antifreeze;
• a plastic funnel, although you can cut a plastic bottle;
• gloves for car maintenance;
• rags or rags.

To drain, it is better to place Logan over an inspection hole or drive onto an overpass. If this is possible, which most often happens, then lay a blanket under the car so that you can lie on it. At the same time, do not forget to put on the speed, handbrake and chocks under the wheels of your car.

Currently reading: New Renault Logan 2 - configurations and prices in 2017

Before draining the old coolant, you need to let the engine cool down so that there is no excess pressure in the cooling system. While the engine is cooling, you can remove the crankcase protection under the engine, if present. Then place a container for the used coolant under the drainage area.

If you have not allowed the engine to cool completely, it is better to relieve excess pressure by opening the cap of the coolant expansion tank. Be careful because excess steam may escape and should not be inhaled.
Then close the expansion tank cap to reduce the initial flow of fluid when unscrewing the drain hose. After unscrewing this hose, the tank cap must be removed.

Precautionary measures

First, you should pay attention! If you are doing such work on your car, you should follow standard safety standards: before starting work on replacing antifreeze, wait a certain time. Before the replacement itself begins, you should wait for the general cooling of the engine in the Logan car and wait until the liquid in its cooling system cools down

Before the replacement itself begins, you should wait for the engine in the Logan car to cool down generally and wait until the liquid in its cooling system cools down.

Since during its operation, the engine temperature increases to more than 100 degrees. When working with the coolant mixture, try to use special protective gloves, since their durable base and chemical composition will protect you from antifreeze.

conclusions

• The cooling system in a Logan car is made of a radiator and pipes leading to it, an electric fan in the cooling system, an expansion tube and a container for storing the mixture.
• The event does not require special skills to perform the entire procedure, and also does not require a special list of tools.
• You can do everything from start to finish in your garage or right in front of your house. But it will be much more convenient to replace the coolers. mixture at the inspection point, since drain pumps and pumping plugs are located at the bottom of the cooling system.
• Consider the size of the drain container - approximately 6 liters (in this case, an old canister is perfect for draining). Also bring a funnel with you (a funnel made from an old plastic bottle works great).
• A rubber bulb or a large probe or syringe for pumping out the mixture (required for pumping out antifreeze from the expansion tank). You will also need pliers to open the cooling system.
• Replacing the coolant mixture in a car of this type should only be done with the engine turned off and already cooled down.
• Using a large syringe, you can pump out old antifreeze from the expansion tank and pour in fresh antifreeze.
• Fill with fresh mixture to cool the engine until the mixture flows into the expansion tank. Towards the end of the replacement, it is worth turning on the car’s engine and letting it warm up before the fan starts working (which will make it possible to ensure that all parts in the engine, including its cooling system, are working correctly).

Related publications

1. Where to fill antifreeze in a car
2. Volume of coolant (antifreeze) in the cooling system
3. Correct replacement of Kia Rio 3 antifreeze and warnings
4. The correct antifreeze for a Renault Logan car

Replacement frequency, what oil to fill

According to the manufacturer's regulations, service changes of engine oil for Renault Logan are carried out after 15,000 kilometers or at intervals of 1 year. But some car owners consider this interval to be a little too high, recommending that it be shortened taking into account operating conditions.

According to the passport and the operating instructions, the tolerances that the engine oil must have are given. The manufacturer's recommendation indicates the use of original oil, in this case, for gasoline engines it is Elf Evolution 900 SXR. The most commonly used viscosity is 5W-30 or 5W-40. For updated diesel engines, it is recommended to use Elf Evolution Full-Tech FE 5W-30 oil.

The manufacturer allows the use of analogues, the only thing is that they must be approved by Renault-Nissan: RN0700/RN0710. Among the owners of the model, the following brands were most popular:

• Castrol GTX 5W-40 A3/B4
• Eni i-Sint 5W-40
• Liqui Moly Leichtlauf High Tech 5W-40
• Mobil Super 3000 x1 5W-40
• Motul X-cess 8100 5W-40
• Ravenol VST 5W-40
• Shell Helix Ultra 5W-40
• Valvoline SynPower 5W-40
• ZIC X9 5W-40
• Lukoil Genesis Armortech 5W-40

From this list, anyone can choose based on preference, price or love for the brand.

Solution

It all depends on what exactly led to the change in coolant color. If you see an emulsion or drops of engine oil in the expansion tank, we advise you to address the problem as soon as possible. You need to dig towards the cylinder head gasket or heat exchanger. Only in these places can contact between engine oil and antifreeze usually occur. You should not delay it, since such a mixture will clog the system, and the engine will not cool properly. In such a situation, after eliminating the cause of the emulsion, the cooling system is thoroughly flushed and the antifreeze is replaced.

If the reason for the appearance of a brown (rusty) color of antifreeze is the end of its service life, it only needs to be replaced.

Important! In any case, flush the engine cooling system. Use only distilled water for this. Rinse until the water is clear. Only then fill in new coolant.

If you replaced the antifreeze, some time has passed (days or weeks) and its color has changed again, this means that the cooling system flush was not done in good faith.

Beware of fakes!

Counterfeiting coolants is one of the most profitable sectors for fraudsters. These compositions are easy to dilute, and buyers won’t even guess. If you don't want to end up with low-quality products, follow these purchasing criteria:

• Price. The market price of products in most stores is the same. Counterfeits usually sell for less.
• Sealing of the eggplant. It is enough to turn it over or squeeze it. If a leak appears or air begins to bleed, then it is a fake.
• Tara. Counterfeits often have a different tone or are even bottled in bottles that do not match the original shape of branded products.
• Foam. In the new product, when shaken, the foam should shrink within 3-5 seconds.
• The quality of the label. Uneven or blurry font, lack of a spill date, cloudy colors or poor adhesive quality - all this will help identify the product of a “widespread” spill.

Remember that it is best to buy coolant in branded stores or trusted points of sale.

How should you choose?

In addition to European coolants, you can find products from America and Japan, which may have the same color scheme. Let us immediately make a reservation that the colors of these manufacturers do not mean that their compositions match. You can mix antifreezes of different colors, but of the same composition. This will be indicated on the label of the coolant canister.

The vehicle's operating manual indicates the coolant approval class, which is also on the label. The main criterion for which it is impossible to combine them is the use of additives of different composition. If you accidentally mix two completely different types of coolant, you can get a violent chemical reaction. As a result, a precipitate may form or flakes may form, after which it will become unsuitable for further use.

Step-by-step instructions for draining liquid from the system

The period for replacing antifreeze on Renault Logan is coming to an end in mainly the following cases:

• if the car has been in daily use for about 6 years;
• if the car has traveled more than 90,000 km.

In order to drain the coolant from the cooling system, you will need.

• Carefully remove the pipes, having first unfastened the clamp (in the future you will have to install new clamps, since they are intended for one-time installation).
• Disconnect the lower hose (the one connected to the radiator) and direct it into a previously prepared container designed to drain old antifreeze.
• Remove the cap from the expansion tank.
• Open the hole on one of the pipes.

If everything is done correctly, then in Renault Logan coolant will begin to flow out of the system more intensively.

You won't be able to drain all the coolant at once. A small portion of the old antifreeze will remain inside the heater. In order to completely remove liquid from the system, you need to disconnect 2 more pipes, having first loosened the clamps at their base. After this procedure, you can get rid of residual coolant by supplying air into the neck of the hole on the tank or fitting.

It should be taken into account that if the pressure is higher than normal, the honeycomb of the stove radiator may collapse. If you carry out this procedure carelessly, you will end up needing a major overhaul of the cabin heater or even a complete replacement.

When all the antifreeze has completely drained from the system, you can begin assembly. All pipes must be installed in place and secured with clamps. After this, the coolant is replaced with Renault Logan.

Renault Logan fuel and lubricant refueling tanks

What and how much to fill in Renault Logan

Engine lubrication system.

Logan is equipped with only three engines: 1.4 liters. 8 valves; 1.6 l. 8 valves; 1.6 l. 16 valves.

If we take the first two engines (1.4 l. 8 valves; 1.6 l. 8 valves), then their volume does not change (3.3 l.) and neither does the oil (ELF EVOLUTION SXR 5W30). But in the case of 1.6 liters. 16 valves, then the oil (ELFEVOLUTION SXR 5W40) and volume (4.9 liters) change.

Engine cooling system.

Here you already need to pour the same antifreeze into all engines: GLACEOL RX Type D, and the volume also does not change - 5.45 liters. Before using antifreeze, it must be diluted with distilled water, the proportion is one to one. In this case, your liquid will solidify only at a temperature of -36 degrees.

Fuel.

The tank has a volume of 50 liters, you need to pour gasoline of at least 92 octane.

Transmission

For manual transmissions, ELF Tranself NFJ 75W80 or Elf Tranself TRJ 75W-80 oil is used, and the fill volume is 3.1 liters.

For the automatic transmission, Elf Renaultmatic D3 SYN Elfmatic G3 oil is used, and 7.6 liters will need to be filled.

The hydraulic booster uses Elf Renaultmatic D3 SYN Elfmatic G3 fluid and needs to be filled with 1 liter.

Brake system.

The brake fluid you need to use is ELF 650 DOT 4, this fluid is well suited for this car and you need to fill it in 0.7 liters, if you fill it with bleeding, it will take one liter.

How to remove all air from the system

First, you should make sure that all internal plugs have been screwed in. Next is to start the engine. After the engine has warmed up at idle speed and after it reaches 30 degrees, the engine should be stopped. Then the excess pressure is removed. How it's done? The pressure is removed by unscrewing the cap from the inlet side of the engine compartment near the expansion pipe itself.

At the same time, all work on unscrewing and further tightening should be carried out as smoothly as possible without sudden movements, since there is pressure in the system, and it is hot and cool. the mixture can burn your palms. Next, cover the throat with your hand and unscrew the pipe with the other hand. After all the basic manipulations, the palm can be removed. When all the oxygen has gone and the liquid begins to flow, the inlet can be closed and the valve screwed in. Next, tighten the tank cap tightly.

Leaks and problems

There can be many reasons why antifreeze leaves, so in each specific case you need to immediately look for the cause, and then think about how to eliminate it. For example, if the interior smells of antifreeze, then there is a high probability that there is a problem with the stove or its pipes.

In general, when changing the coolant, you should carefully inspect all hoses and pipes for cracking, so that if something happens, replace them immediately. It is also worth paying attention to the thermostat, because most problems with poor heating lie there.

Users also note problems with the expansion tank. The plastic inside, which becomes brittle over time, breaks off and gets into the cooling system. Most often, the stove becomes clogged with these debris. Therefore, if a problem is detected, it is recommended to replace the tank immediately.

About types of liquids

• Carboxylate is a type of antifreeze that is endowed with balanced quality conditions, which allows it to be used in different temperature conditions. This category of coolants is traditionally characterized by a high-quality base formula that provides reliable protective properties. Such a refrigerant will eliminate the possibility of unexpected malfunctions in the cooling circuit of the Renault Logan engine during the operating period. Most manufacturers highly recommend or even use carboxylate antifreeze in their car models.
• Hybrid - this type was widely used in the nineties, but even today it is a very popular alternative, preferred by a large category of car owners, including Renault Logan. The liquid has excellent performance in terms of reliability and duration of preservation of its protective properties in terms of elements of the cooling circuit.
• Traditional is a type of liquid that is considered obsolete in comparison with the previous ones, but has good conditioning properties and is capable of maintaining them for a long time during operation.
• "Lobrid" is one of the latest and most promising developments. It takes a worthy place among the leaders in this segment due to the use in its composition of various additives and additives that help improve the protective properties of cylinder blocks and their heads made of aluminum.

We recommend using this particular type of fluid for the engine cooling system in Renault Logan. Although, everyone decides for themselves which coolant to pour into their car.

For many amateurs, the main criterion when choosing antifreeze is its color, which leads to a not entirely correct opinion about the identity of the qualitative properties of different liquids when the color scheme matches. And here again the question arises: what kind of antifreeze should I use? In fact, the color of the refrigerant acts as an indicator in case of leaks from the cooling circuit. Therefore, if yellow refrigerant is poured into the system in a particular car, this does not mean that it is incapable of combining with red or green liquid. Combination is not a mandatory procedure, although it is better to find out about the variety of colors of liquids suitable for the Renault Logan model from an official representative of the manufacturer.

Choice of antifreeze

Nowadays Renault Logan coolant is presented in huge quantities on the market, so it has become very difficult to make a choice. The article will give some recommendations for selection, and also discuss several popular types of liquids.

• Carboxylate antifreeze. Due to the fact that it has balanced conditions of excellent quality, it can be used at different temperatures. This category of coolant has basic formulas that ensure reliable protection of its properties. This type eliminates the possibility of any unexpected malfunctions occurring during vehicle operation. Therefore, many manufacturers prefer this antifreeze for their cars.
• In the nineties, the hybrid type was in great demand, but today it is also popular among many car owners. This popularity is due to its reliability and long-term preservation of its positive properties.
• The traditional type of coolant is considered outdated, although it has excellent conditioning properties that last for quite a long time
• The most modern and promising development today is the Lobrid type. Due to the fact that the composition includes all kinds of additives and additives that increase the protective properties of the heads and cylinder block, this type occupies a leading position among the favorites in this segment.

Therefore, the Renault Logan cooling system will work perfectly with this type of coolant. But despite this, everyone can choose exactly the one they see fit.

Many believe that the quality of the liquid depends on the color, and also that they can be compatible with each other depending on the color scheme. But this does not mean that pouring, for example, yellow coolant into the system will somehow behave worse, so the best option would be to consult with the official manufacturer on this issue.

Replacing temperature sensors

Checking the serviceability of the sensor using a thermometer and a measuring device is a necessary procedure before replacing it.

If the readings obtained as a result of measurements differ greatly from the data given in the table, then the sensor is faulty and must be replaced.

To replace the sensor, car owners rarely turn to specialized car services and do the replacement themselves. The sensor that detects the coolant temperature must be replaced every time the engine is disassembled.

The temperature sensor constantly works in an aggressive environment, which ultimately leads to its wear. A faulty sensor gives incorrect readings, and this phenomenon can only be eliminated by replacing it. Before replacing the sensor, it is necessary to drain the coolant in such an amount that the liquid does not reach the hole into which the sensor is screwed.

It is recommended that when replacing the temperature sensor, you also replace the coolant. Because within 3 years the liquid becomes contaminated, and this contributes to distortion of the sensor readings, resulting in possible engine overheating and other problems.

Before screwing in the new sensor, it is necessary to cover the threads with sealant, after which new coolant is poured.

As a result, it must be said that temperature sensors, like all elements of the car, perform important functions in the operation of the power unit and other systems, so it is necessary to regularly check their performance (at least visually). If the sensor readings are incorrect, you need to replace them immediately to avoid more serious problems with the car engine.

How to change coolant?

Changing the coolant must be done on a cold engine. Antifreeze is a poisonous liquid, so you should be very careful when handling it.

It is important to prevent liquid from coming into contact with skin, clothing, or paintwork. If this happens, the antifreeze must be washed off with plenty of water.

How to drain?

Before draining the coolant, first unscrew the cap on the expansion tank. In this case, safety precautions must be observed, since hot steam comes out of the tank. To avoid burns when unscrewing, you can cover the neck with a rag. The lid is slowly turned counterclockwise until a hissing sound is heard. When the pressure drops, unscrew the cap completely. If there is protection on the engine, it must be removed. In the area of ​​the pump, under the car, a container is installed for the drained liquid.

If your car is equipped with power steering, first remove the drive belt from the pump pulley. Then lightly unscrew the bolts holding the pump bracket, then turn it upward so that the thermostat and cooling system pump hoses are accessible.

The lowest element of the cooling system is the pump. Three hoses are attached to it.

Three coolant hoses

The middle hose is too short, it is difficult to remove it without damaging it, so it is not touched. First, remove the clamps from the upper hose to disconnect it and drain the coolant. Then the lower hose going to the radiator is disconnected and the remaining antifreeze is drained. Remove the thermostat flange and the thermostat itself to drain the coolant from the cylinder block.

Thus, most of the liquid is drained from the system. Some of the liquid remains in the heating radiator. To get rid of it, remove the lower hose from the radiator, put on a hose of a suitable diameter and blow into it. Thus, the remaining antifreeze comes out of the radiator and the middle hose of the pump, which was not unscrewed.

Having finished washing, all hoses must be connected in the reverse order and the thermostat must be installed with a new rubber seal. When installing hoses on the pump, you should clean its outlets if there are deposits on them. If necessary, install a new temperature sensor for the Volkswagen Passat B3, two of them are needed.

The clamps must be installed in the same places. The power steering pump, along with the bracket and drive belt, is installed after new coolant has been added to the system.

If you neglected to replace the coolant, the cooling system will work ineffectively due to poor passage of channels clogged with sediment and rust. Therefore, it is advisable to flush the system before adding new fluid. For rinsing, use either clean or distilled water. The engine and radiator are flushed separately.

How to fill?

Before filling, you should prepare the coolant. To do this, antifreeze is diluted with clean or distilled water approximately 50/50. The antifreeze content should not be less than 40%! (MISSING)Before filling in coolant, it is necessary to check the integrity of the hose and the quality of tightening of the clamps. If everything is in order, the cooling system is filled with new coolant. Fill slowly to avoid any air bubbles. The liquid should be poured to a level just below the maximum.

Expansion tank in Volkswagen Passat

After the replacement is completed, it is necessary to check the tightness of the connection between the thermostat and the cooling pump, the hoses with the radiator and the pump. Places where antifreeze leaks are possible are identified by the presence of a white coating. The presence of cracks and the elasticity of the sleeves is checked by squeezing and bending them.

Then install the power steering pump and drive belt. Screw the cap on the expansion tank. After this, you should start the engine and let it run for some time in idle mode at accelerated speed. As soon as the temperature sensor gives a signal to the fan and it turns on, you should turn off the engine and check the coolant level in the tank. At operating temperature, the coolant level should be slightly below the maximum.

After turning off the fan, you should remove the air from the heating radiator. To do this, add speed to medium, in this mode the engine should run for two minutes. When the engine has cooled down, the level is checked again; it should not fall below the minimum. If everything is done correctly, the temperature sensor in operating mode will show a temperature of 80-90 degrees.

Drain the old fluid

The pipe in the Renault Logan is removed when the lock nut is first removed from the tightening clamp. Recommendation: if the hoses are secured with original Renault clamps, then they are replaced with new ones, since the old ones are disposable. Afterwards, the hose is twisted from the fitting and lowered into the container. The waste will drain in parallel from the pipe and the radiator. Then remove the cap of the expansion barrel and the plug from the vertical fitting located on the wide pipe fitting to the body of the thermostat. This is to increase the intensity of antifreeze drainage. And the coolant is replaced correctly and faster.

Due to the design features of the Renault Logan cooling system, these actions will not allow all the coolant to drain. A certain amount of it will remain in the radiator of the interior heater. To completely drain the waste, the pipes are unlocked and the clamps are removed from the two hoses that go to the thermostat, and the tubes themselves are lowered into the drain container. Then the cooling system is purged using compressed air supplied through the neck of the expansion tank and the holes in the thermostat housing. The operation is performed carefully without excessive pressure. Otherwise, the honeycomb of the interior heater radiator may be deformed.

After a certain time, during which the cooling system is completely empty, you can reinstall all components. All hoses are returned to their original places and secured with new clamps. Afterwards, new coolant is poured in, but which brand is decided by each individual. For some time, the Renault automaker filled the system with GLACELFAUTOSUPRA antifreeze from the TOTAL brand, painted in a bright yellow and pure yellow color spectrum. Since 2009, when antifreeze is replaced, GLACEOLRXTypeD, produced under the ELF brand, is poured into the system. It has a yellow tint, and before filling, the concentrate is diluted in a 1:1 ratio with distilled water for any volume. These two brands of antifreeze are characterized by excellent quality and are used for use on the French sedan Renault Logan with a 1.4 and 1.6 liter engine. They are purchased from the official Renault distributor. When replacing antifreeze, many are interested in the volume, it is within 5.5 liters, and the color of the liquid is determined through an Internet search. The outer packaging can be viewed in the corresponding video.

How to drain old antifreeze in Renault Logan

There is no drain plug for draining antifreeze in Renault Logan, so you have to drain it by removing the cooling pipe. We are talking about the lower pipe of the cooling radiator, secured with a clamp.

To open the drain hose clamp, you need to insert a slotted screwdriver into its lock, as shown in the photo (the hose has been removed for clarity), and turn the screwdriver.

Advice: if the hoses have “original” disposable clamps from Renault, then it is better to replace them with clamps with a worm gear.

Remove the hose from the radiator pipe and drain everything into a container.

In order for the liquid to flow faster when draining, you need to remove the plug from the vertical fitting, which is located on the thick pipe near the thermostat.

Due to the design of the cooling system in Renault Logan, not all of the antifreeze is drained, because some of it remains in the interior heater radiator . To drain the antifreeze from there, you need to remove two more hoses from the thermostat and tilt them down. After the residue has flowed out, you can blow air out of these hoses.

You have to be careful when blowing, because excess pressure can bend the delicate radiator lamellas. The video shows how to properly drain the coolant yourself.

Causes of leaks

Antifreeze leaks are a fairly common problem that requires immediate attention. Even minor leaks can turn into serious leaks at the worst possible time. As a result, the engine overheats, which leads to problems with the motor.

It is important not only to find the place where the leak occurred, but also to completely eliminate the cause

The engine cooling system consists of a number of elements, as well as connecting pipes. Antifreeze, which is a mixture of water and coolant, heats up as the internal combustion engine heats up. As a result, the causes of leaks can be:

• defects in connections responsible for tightness and tightness;
• problems with the elements of the cooling system;
• wear of elements;
• mechanical damage to the elements of the car cooling system;
• errors when assembling elements after repair work;
• violation of the rules for using a car;

The primary sign that there is a problem in the system is the level of antifreeze in the expansion tank. Its constant decrease indicates leaks.

A characteristic sign of a leak is wet spots and collected drops. If this cannot be detected by visually inspecting the parts, then all components of the cooling system should be checked.

More serious problems with antifreeze leakage include cracks in the block and cylinder head. Such a defect can lead to antifreeze entering the internal combustion engine cylinders, leading to mixing of coolant with engine oil. As a result, the antifreeze level drops and the lubricant loses its properties. It is necessary to immediately eliminate the problem, as the unit wears out and may jam and fail.

In conclusion, it is worth noting that in order to avoid breakdowns, leaks and the need to completely replace antifreeze on Renault Logan, you should not add water to the antifreeze when the fluid level decreases in the cold season. The percentage ratio of the required concentration is violated, which leads to freezing of the coolant in the system. The risk of damage to the cooling system and engine failure increases.

Choosing antifreeze

During maintenance, like any other Renault Logan car, it requires increased attention. And one of these stages is diagnosing and replacing the coolant. The most common question for new Renault Logan owners is: What should I fill in? After what time should I change it? You can read more about these questions in this article.

Under the hood of the two-liter Renault Logan in the new body there is also yellow antifreeze (photo of the editorial car)

However, it should be remembered that the frequency of replacing the coolant directly depends on the operating conditions and time of operation. Therefore, if the car is used more often in difficult weather conditions, replacement should be carried out more often than specified by the manufacturer.

If you want to get the full benefit from the Renault Logan cooling system, you should strictly follow the manufacturer's rules and advice.

Factory antifreeze catalog number

After replacing the antifreeze, we recommend checking the oil level in the gearbox and the condition of the engine oil.

Causes of leaks

• If you find a coolant leak, this could happen for several reasons:
• The connections are not tight due to old clamps or pipes.
• Worn cylinder head gaskets or O-rings.
• An air lock has formed.

Product classification

Before purchasing any product, we recommend that you familiarize yourself with the existing types and their features.

This is important if you select analogues for original products. Most often, manufacturers and drivers use the classification from the Volkswagen concern.

It includes the following classes of coolants:

• G11 is a classic ethylene glycol-based product. Contains numerous additives, including for corrosion protection. Their use slightly impairs heat transfer, which results in a short service life - the maximum limit is only 2 years. Typically blue or green in color.
• G12 (+,++) – compositions based on organic acids with carboxyl additives. The key feature is that the additives begin to envelop only vulnerable areas with a protective film, and not the entire surface. The advantages include improved heat transfer, absence of abrasive and a service life of 3-5 years. Usually painted red.
• G13. The main feature is the propylene glycol base, which, unlike ethylene glycol, is environmentally friendly. Available in red and yellow. This is where the differences end. The characteristics are identical to the G12 variations.

Which of these is better is a controversial question. Here you should first of all focus on the material that is used in the cooling system. If the radiator is made of copper or brass, then it is preferable to use carboxyl compounds (G12) or coolant without silicates (G13). For structures made of aluminum and its alloys, a silicate composition (G11) is suitable.

Another question: which is better - antifreeze or antifreeze. Antifreeze is a foreign designation for basically all coolants. Antifreeze, in turn, is already the name of a specific product developed back in Soviet times.

In fact, according to its characteristics, antifreeze can be classified as one of the subgroups of antifreeze. You shouldn’t get hung up on the names, because when choosing, you need to take into account the manufacturer’s recommendations and composition parameters.

Flushing the engine cooling system

Before adding new antifreeze, you need to flush the cooling system. This is the only way to clean the radiator and engine channels of deposits. What to use for rinsing:

• distilled water;
• special liquid.

Of course, the efficiency of flushing the system with water will be lower. However, if you acidify it, then the scale will easily come off metal surfaces.

To make distilled water acidic, add 70% vinegar or citric acid to it.

Important! There is no need to acidify the water too much. Otherwise, the rubber elements of the system may be damaged.

For example, for the entire volume of rinsing water you need to add 1 bag of lemon juice or half a small bottle of 70% vinegar.

If your budget is limited, but draining the coolant and flushing the system is necessary, this method is best suited. After all, acidified water will remove scale from internal surfaces, while you will spend a minimum of money.

After the citric acid is dissolved in water, it is necessary to pour the prepared mixture into the cooling system. Monitor the fluid level, because it will slowly decrease because air will be forced out of the engine and radiator channels.

So, you have noticed that the coolant level is no longer decreasing. Now we start the car and wait 15–20 minutes. During this time, the water temperature will rise to operating temperature. Then we turn off the engine and leave the car for 5-6 hours for the acidified solution to take effect. After this, you need to drain the water from the system, and then repeat this cleaning procedure, but fill in with ordinary distilled water.

We wait in the same way until the coolant level is fixed. We start the car, let it run for 15-20 minutes and turn off the engine. We wait until the engine cools down, 60 minutes is enough, after which you can drain the water.

In order to completely flush the cooling system using acidified and ordinary distilled water, it will take a little more than 7 hours. Is your time limited? Then you will have to use a special cleaning composition, but this option will no longer be budget-friendly.

A liquid specially designed for flushing makes it possible to completely clean the system, and you will spend a minimum of time on this procedure.

You will get the maximum cleaning effect if you use a two-component cleaning composition. This product will effectively remove antifreeze decay elements, all kinds of deposits, and corrosion from the system.

The technology for cleaning the cooling system using a professional product is exactly the same as described above. However, due to the special additives contained in the cleaning liquid, it will take a minimum of time for deposits to separate from metal surfaces. You don't have to wait hours for your cleanser to work.

Replacement Regulations

You can always find the answer in the technical manual for Renault Logan. The manufacturer recommends replacement every 90 thousand kilometers or once every 5-6 years if you drive extremely rarely. The latest formulations make it possible to increase this figure to 100-110 thousand, however, car owners do not recommend exceeding the parameter recommended by Renault. Naturally, the liquid can become unusable much faster. This usually happens for two reasons. The first is extreme operating conditions, when the driver practices an aggressive driving style and squeezes the “last” juices out of the engine. The engine heats up more, so the antifreeze has to work harder, which shortens its life.

The second is the presence of a technical problem. Radiator damage, leak detection and the like. After eliminating the malfunction, it is recommended to replace the coolant ahead of schedule. It is not allowed to reuse compositions that have been in use for a long time.

Clogged coolant can cause a lot of problems, including:

• jamming of the thermostat, destruction of its structure due to corrosion;
• destruction of the pump rotor blades;
• depressurization of bearings;
• clogged radiator channels and subsequent overheating of the internal combustion engine.

In many ways, the frequency of replacing antifreeze on a Renault Logan is determined by specific signs, which we will talk about later.

When to replace

First of all, it is important to understand when to perform such a procedure. Most auto mechanics advise replacing antifreeze at least every 24 months.

This especially applies to vehicles with a cylinder head and radiator made of aluminum. In addition, the technical documentation indicates the maximum period for the operation of the coolant.

For example, on Ford cars the manufacturer sets 240 thousand km. mileage, on Mercedes - five years, etc. In domestic models, this period is usually 2-3 times less. Long antifreeze service life is achieved through the use of innovative coolants with an improved formula.

In addition, it is necessary to carry out such a procedure if the liquid changes color, becomes cloudy, or a precipitate begins to form. You also need to change the antifreeze after repairing the power unit and adding fresh material there (this prevents its corrosion).

At the same time, it is advisable to use the original composition, so when choosing a product, follow the manufacturers’ instructions.

Specifically for Renault Logan

First, let's find out what kind of coolant is poured into the Renault Logan. Since 2009, the car has been filled with GLACEOLRX TypeD from ELF. It has a yellow tint. Previously, GLACELF AUTO SUPRA was poured into the car, which was not inferior in quality to products from ELF. If you find these coolants, you can safely use them for the cooling system. They are of high quality and recommended by the manufacturer himself. Products are sold in diluted and concentrated forms. In the latter case, you need to dilute the coolant yourself with distilled water in a 1:1 ratio.

If it is difficult to find original antifreeze, then look for analogues. The following brands of antifreeze for Renault Logan can be used instead of branded coolant:

• Liqui Moly KFS 2001;
• Cool Stream Premium;
• Aral 4003116908396 Silikatfre;
• Glyco Shell Longlife;
• SWAG 60 ANTIFREEZE (Green);
• Kuhlerschutz SF.

You will have to find out for yourself in practice how high-quality and durable these compounds are. When purchasing, remember that the color of antifreeze in Renault Logan is not an indicator of the class of the product. Not all manufacturers adhere to the color rules described above, so first of all read the labeling and description of the composition.

Scope of application

Ready-to-use Renault coolant

The original antifreeze from Renault was developed for use in the cooling systems of any modern internal combustion engines. It is best suited for Renault-Nissan engines.

It is completely neutral to metal alloys and rubber compounds, which allows it to be used in cooling systems with copper and rubber parts.

Important! In the event of an antifreeze leak, the manufacturer strongly does not recommend mixing it with other brands of antifreeze, even if they have a similar green color. The best solution would be to add the same antifreeze to the cooling system. If you don’t have the same canister of Antifreeze concentrate Renault Type D with you, you can mix it with ordinary distilled water until the leak is eliminated and all the coolant is replaced.

Symptoms of antifreeze production

In parallel with mileage monitoring, drivers should pay attention to the characteristic signs of the functioning of car components. If the coolant ceases to cope with its task, this will be expressed in the following signs:

• regular engine boiling;
• increased fuel consumption and loss of power;
• the appearance of coolant leaks caused by corrosion processes;
• presence of sediment in the expansion tank;
• problems with the operation of the air conditioner (if equipped);
• the appearance of extraneous noise in the pump area.

These symptoms should not be ignored. If the radiator and pump are relatively inexpensive components, then engine repair is already a serious blow to your budget. And regular boiling of the engine on a long trip will turn into real hell. As a result, you will be forced to fill in new coolant.

If the engine overheats

Quite often you can see open car hoods with steam pouring out from under them. Engine overheating is not only an unpleasant situation, but also fraught with serious financial losses, since overheating almost always results in damage to engine parts.

Basically, engines overheat for the following reasons.

№1

Due to the thermostat sticking. This is detected as follows: hot air is blowing from the interior heater “stove”, but the radiator is cold. In this case, you usually need to change the thermostat (we recommend changing it every three years).

№2

Lack of coolant. This is easy to check: open the radiator cap and look. When the engine is warm, the Antifreeze level should be almost level with the filler neck. Antifreeze deficiency can occur for several reasons. First, there is a leak in the cooling system. Typically, when there is a leak somewhere in the engine compartment, the engine will hover slightly at idle.

If there is a leak in the “stove” radiator, i.e. in the cabin, the windows fog up heavily in the morning. Secondly, the lack of Antifreeze may be due to the fact that it is “kicked out”. Antifreeze can be “expelled” either by exhaust gases when the cylinder head is “broken,” or by steam that forms in the cylinder head due to boiling Antifreeze due to poor circulation of the coolant. In all cases, Antifreeze is expelled into the expansion tank. We recommend making it a rule that when checking the fluid level in the radiator, check the level in the expansion tank.

As you know, antifreeze expands when heated, and the excess “goes” into the expansion tank. When the engine cools, when the Antifreeze “compresses,” a vacuum is formed in the cooling system, and the Antifreeze from the expansion tank is sucked back into the cooling system through a special valve in the radiator cap. If there is a defect in the radiator cap, then there will be no vacuum in the cooling system when the engine is cooled, which means that in the morning you will start a cold engine with a half-empty cooling system.

If there is a suspicion that Antifreeze is expelled by exhaust gases, the following procedure can be recommended. Place a plastic bag on the neck of the expansion tank (or better yet, a condom, it does not disintegrate from hot Antifreeze), start the engine, raise the speed to about 1500 rpm, observe the shape of the bag, if it inflates before your eyes (within a minute significantly changing its size), then exhaust gas breakthrough is 100%. At the service station, we check gas breakthrough with a special device (video 1).

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Leaking EGR Cooler

Cleaning the radiator of the cooling system.

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What can engine overheating cause?

Checking the breakthrough of gases into the cooling system

But do not rush to remove the cylinder head; examine the cooling system for the presence of a radiator for cooling recirculated gases EGR. If there is one, remove it and test it with compressed air. In FORD TRANSIT 2.0 TDCi cars, this radiator is a weak point (video 2).

№3

— Malfunction of the cooling system pump, which does not ensure good circulation of coolant, which can occur as a result of the pump impeller being destroyed due to corrosion and “local boiling” occurs in the engine. In this case, the “stove” in the car’s interior will heat very poorly, and in the radiator the temperature difference between the upper and lower pipes will be large, and should be about 12.5 ° C.

You can check the operation of the pump while the engine is running by removing the rubber tube that goes into the car’s interior to the radiator of the “stove” and “by eye” determining the fluid pressure: if you plug the tube with your finger at idle, at least than half a meter. In addition, you can “by eye” check the pressure developed by the water pump. To do this, without removing the rubber hose, you need to pinch it with your fingers (the “stove” valve, if there is one, must be open) and accelerate.

№4

— The radiator is clogged from the outside with dirt, insects, poplar fluff - it should be rinsed in the opposite direction with water pressure (video 3), and a protective mesh should be installed.

№5

— The cooling system is clogged with dirt. Dirt refers to rust, emulsion, and just garbage. Flushing the entire cooling system is easy. Drain the Antifreeze (if it is as clean as a tear, then flushing the engine is useless - there is no scale in it) and fill the cooling system with water. Start the car, let it run for about five minutes, then drain the water. And so on several times until clean water comes out of the drain taps. This operation will be much more effective if anti-scale agent or, as recommended in Russian literature, caustic soda is added to the water.

Antiscale (you will need 50 grams of it) can be found in any boiler room, where they will tell you both the concentration and the rinsing time. Reduce the dose by half (everything there is made of cast iron and is very thick, while in the car everything is thin, and the metals are more precious) and rinse your engine for about 15 minutes. Then, when you have drained the water with anti-scale, you need to fill it with clean water and drain it , and so on six times. Otherwise, the anti-scale residues will “wash” your engine down to the holes in the radiator. To speed up cleaning, you can also remove the radiator and wash it on the floor with a reverse flow of water. To flush the radiator of the stove, you can remove both hoses from it and supply water alternately to one hose and then to the other.

№6

— Malfunction of the radiator fan, fan switching sensors. The viscous fan coupling (on longitudinally mounted engines), when the engine is switched off, should stop in place with the engine, but if the fan continues to spin by inertia, then some of the silicone grease has already flowed out of the coupling, and it needs to be changed. The fan switching sensors need to be selected for the minimum switching temperature; it’s okay if the fan switches on ahead of time, at least it’s cheaper to replace the fan than to repair the engine.

№7

— Misregulated fuel equipment and ignition. Late ignition or, in diesel cars, late injection - in this case the engine does not pull well and you need to figure out why the ignition suddenly became “late”.

But if you still cannot avoid overheating and you see that the coolant temperature gauge needle is inexorably creeping towards the red zone, do not panic.

• Then turn on your emergency lights and pull over to the side of the road. If steam is not yet pouring out from under the hood, do not turn off the engine, because while it is running, coolant is most likely (if the pump is intact) circulating through the system. As soon as the motor stops, the fluid circulation will stop, it will boil in the hottest places, and the motor may jam.

• If the stove working at full power does not help and the temperature still rises, then the matter is serious and the engine needs to be turned off. Open the hood for better ventilation of the engine compartment. God forbid you open the cap of the expansion tank and add cold coolant to the cooling system of an engine that has not yet cooled down! This is one of the surest ways to get burned yourself and cause the block head to crack. Everyone remembers the school natural history course, where they taught that a very strong stone, granite, just needs to be heated well a couple of times and poured with water for it to crumble. The analogies are clear without comment.

• After letting the engine cool, try to find out the cause of overheating, because, as already mentioned, a working engine does not boil in normal driving modes. Perhaps the reason is a damaged thermostat or, for example, a broken fan belt. Or the wire from the temperature sensor has fallen off. If the cause can be eliminated on the spot, you’re lucky; if not, the car will have to be dragged on a “tie” for repairs.

But even if the malfunction was eliminated and the engine started, it is worth remembering that in the vast majority of cases such things do not go away without leaving a trace. All the same, engine parts are deformed, local stresses arise in them, fraught with the appearance and development of microcracks.

Due to deformation of the cylinder head, the gasket may “blow through”; when working at high temperatures, due to insufficient cooling, scuffing on the friction surfaces and many other troubles may appear. All of the described things are especially typical for modern highly accelerated engines, especially in-line “sixes”, for which there is a simple explanation - the larger the linear dimensions of the part, the more it “drives” when heated.

You should remember a simple thing - a working car under normal conditions, even in summer traffic jams, does not boil.

Temostat replacement report

Before replacing the thermostat on Renault Logan, drain the coolant. To do this, release the pressure by unscrewing the cap of the car's expansion tank.

Then remove the upper hose of the expansion tank by tightening the clamp.

Then pour the coolant into a previously prepared container. This can be done much faster if air from the compressor is supplied to the expansion tank through the hole from which we removed the top tube. It is better to drain the coolant when the engine is cold.

After the liquid has been drained (about 3 liters), remove the air duct. It can be easily removed, you just need to snap it (clips).

Then unscrew the three thermostat mounting bolts. They are unscrewed with a 8 or 10 head, depending on the motor.

After this, remove the thermostat from the housing.

You can determine that the thermostat has “outlived its usefulness” by carefully examining it. The rubber seals on it are frayed, with defects, the valve is not completely closed (open). This thermostat definitely needs to be replaced.

Installing a new thermostat begins with preparing the installation site and cleaning it thoroughly. Check the thermostat housing itself for leaks, cracks, etc. If defects are found, it is better to replace it.

We install a new thermostat. It should sit tightly in place, and there should be no defects on the seals.

Installation occurs in the reverse order of removal. We fasten three bolts and install the air duct pipe. The clamp for the upper pipe of the expansion tank can be reused (if it was removed without damage).

Something else useful for you:

• Replacing antifreeze on Renault Logan with your own hands
• Renault Logan idle speed fluctuates

Then fill in antifreeze. Experienced car enthusiasts recommend that before reusing antifreeze, strain it to remove any impurities that might have gotten there during draining.

Together with the filler plug, you need to remove the air bleed plug so that when filling antifreeze you do not air out the cooling system.

Coolant is filled to the maximum level marked on the expansion tank. In this case, the liquid should begin to flow out a little from the air bleed hole. In this case, antifreeze must be poured in portions, with short breaks, to allow air to escape through a small hole for bleeding.

To stop the leakage of antifreeze, you need to close the filler neck of the expansion tank with your hand and put a cap on the hole to bleed air.

You need to add fluid to the expansion tank to a level between the upper and lower marks. After the engine warms up, the antifreeze will expand and the level will reach the upper mark.

Tighten the plugs tightly, turn on the headlights and warm up the engine. You need to turn on the headlights to increase the load on the generator and the engine, and this will make it warm up faster. After the engine has warmed up, check the antifreeze level in the expansion tank. If it does not correspond to the top mark, add more.

Filling the system and instructions

Using a filler, antifreeze fills the Renault Logan cooling system through the inlet pipe with the exhaust fitting cap unscrewed. Filling must be done without haste, kneading all the tubes to squeeze out air pockets from the system. The procedure is carried out until the moment when liquid begins to flow out of the fitting in a small stream; the main thing is not to miss this moment. You should immediately remove the watering can from the filler hole and quickly close the neck with your right hand to stop the liquid from pouring out through the outlet valve. And with your left hand you screw in the fitting plug, after which the required amount of antifreeze is added to the neck. The fluid level should normally correspond to the middle between the maximum and minimum marks. This is how to properly replace the coolant. Next, air is released from the system:

1. Check the fixation of all clamps and the tightness of the covers, then start the engine. Warm it up at idle to a temperature of no more than 40 degrees (the main thing is not to miss this moment), stop the engine.
2. Before getting rid of air pockets after filling in a new “anti-freeze”, you should reduce the excess pressure by unscrewing the cap of the expansion tank. Important! The system has high internal pressure, so such operations are performed carefully, especially when the engine is not cooled down; if you unscrew the plug quickly, the hot liquid will cause burns on your hands.
3. Close the tank with your right hand, remove the fitting cap with your left hand, and remove your hand from the neck. After liquid begins to flow from the fitting, close the neck with your hand and tighten the drain valve. The filler cap is also tightly fixed.
4. Since the interior heater radiator in Renault Logan is located above other elements of the cooling system, air remains in it. To blow it out, you need to connect a pump to create the required pressure. The engine starts again for 5-10 minutes and runs at high speeds of 2000. It is necessary to monitor the temperature indicator so that the engine does not overheat.

1. Drain from the outlet hole again, without blocking the filler neck with your hand, but screw in or unscrew its plug so as not to get burned. The operation is performed with 2-3 repetitions, only then you can get behind the wheel.
2. An irreplaceable thing is the coolant temperature sensor.

After the antifreeze is replaced, the system will still retain air inside for some time. This can be determined by temperature fluctuations or ineffective heating of the interior. Therefore, periodically, while operating the machine, air must be removed from the system.

If you need to flush the system on a Renault Logan, you can use this algorithm, but after adding antifreeze, air pockets may not be removed with such care. To do this, a short operation of the motor without overheating is enough. And don't forget about the coolant temperature sensor.

How to add antifreeze and remove air

Replacing antifreeze on Renault Logan has reached the final stage. The last stage is the destruction of air pockets in the system. To do this, it is necessary to remove the plug of the fitting for removing air masses. Then a funnel is inserted into the neck of the expansion tank (you can take the cone-shaped part of a plastic bottle). Antifreeze is pouring in. The procedure should not be rushed; air plugs should be periodically removed from the hoses by pushing through the pipes. Somewhere after 5.5 liters, a stream of liquid will flow from the fitting.

Now everything needs to be done quickly. The funnel should be immediately removed from the neck, and the hole should be blocked with the palm of your hand, which will stop the flow. With your other hand, tighten the plug on the fitting. Then the hand is removed and the required amount of antifreeze is added to the tank. Pay attention to the minimum and maximum marks - the level should be between the marks.

Next, you should release the air. To do this, you need to make sure that all the clamps are installed correctly and turn on the engine. The car should be warmed up for a couple of minutes so that the temperature of the liquid is no higher than 40 degrees, otherwise you can get seriously burned. Next, you should follow the instructions.

1. Carefully and carefully turn the expansion tank cap. This has already been said at the beginning of the article, but we repeat: the system works under pressure, with a hot engine there can be a geyser effect, and hot antifreeze can splash out. Wear gloves and unscrew the cap slowly.
2. Wait until the air comes out. After this, perform the same procedure as you did after pouring new liquid: cover the neck with your palm, twist the fitting tube with the other hand.
3. When you remove your hand, air will come out and then antifreeze will drip out. As soon as the first stream flows, you need to cover the neck again and tighten the tube.

That's not all. The features of the cooling system in the first version of Logan are such that even after cunning manipulations, air will remain in the heater radiator. What to do? Create pressure in the system several more times and release the air pockets. Moreover, it is recommended to warm up the engine well, about 10-15 minutes. In this case, the tank inlet is not fully opened: by twisting the valve of the fitting, the neck of the tank is slightly opened and closed again. It is recommended to have surgery to remove air pockets several times after you start driving your car. Since the air will remain there anyway, and the temperature may jump, which is not very good for the car engine.

Owners of the second series Logan were luckier. The designers have improved the cooling system in this model. According to the “Loganovods”, you don’t have to worry about thoroughly removing air masses. It will be normal if you just let the engine run for a while without overheating.

How much antifreeze do you need?

In the list of tools and consumables in the first part of the article, ELF GLACEOL RX TypeD liquid was named. Sometimes car enthusiasts talk about a certain TOTAL GLACELFAUTOSUPR. The fact is that this product was actually recommended by Renault until 2009. You won’t find it on sale, and we are left with only ELF antifreeze.

Liquids for car cooling systems are divided into two types: already prepared and concentrates. The product recommended by the manufacturer is a concentrate; it is diluted with distilled water (one to one). The required volume for Logans with 1.4 and 1.6 engines is 5.5 liters.

Therefore, you need to buy three one-liter canisters. There will be approximately half a liter of concentrate left in the canister. This is very convenient, since when you add water to the full volume, you get one liter of ready-made antifreeze. You will need it when you need to add fluid to the reservoir.

Tools and consumables

What tools and consumables are required to replace fluid in the cooling system?

1. About six liters of a mixture of water and antifreeze ELF GLACEOL RX Type D Renault 7711428132. The proportion is one to one.
2. Ten key for removing crankcase protection.
3. Hose clamps.
4. Screwdriver and pliers.
5. A container for draining old antifreeze (a wide one is better, a cut canister is ideal).
6. Funnel.
7. Gloves and rags.

It should be remembered that while working in the cooling system, the engine must also be cold. In addition, before the procedure, you need to open the hood and turn the cap of the expansion tank (indicated by number 2 in the figure). There will be a hissing sound. This way you can remove excess pressure. The main thing is not to suddenly open the lid when the engine is warm. Otherwise, one or two liters of liquid will escape from the tank and burn your hands (geyser effect). You must wear gloves when opening the lid, as antifreeze is poisonous.