Replacing coolant on a VAZ 2107

Coolant plays an important role in the engine cooling system. Without it, the engine will not be able to operate for a long time. Thanks to antifreeze, the life of the engine is extended due to the fact that it is constantly cooled.

Why then is it necessary to change antifreeze for the VAZ 2107? As it is used, the coolant loses its original properties and is unable to cool the engine. Timely fluid replacement is a process that can be easily done at home if you know the replacement procedure step by step, which will be discussed in the article.

Stages of replacing coolant VAZ 2107

On most classic Lada cars, drainage is provided from the radiator, as well as the engine. But before adding new antifreeze, it is recommended to flush the cooling system to prevent impurities from getting into the new liquid.

Coolant drain

Before starting the draining procedure, you should prepare tools, containers for used antifreeze, as well as new liquids for subsequent refilling. If protection is installed under the engine, it can also be removed for convenience.

Next, we perform the procedure for draining the liquid from the VAZ 2107:

Turn the temperature regulator in the cabin to the maximum position to the right (Fig. 1).

Fig.1 Temperature control
We find the plug in the bottom left corner of the radiator and unscrew it, after placing a drain container under the radiator. (Fig.2). On older versions, this plug is not present; a fan switch sensor is installed there. To drain the antifreeze, you need to unscrew it; this can be done with a 30mm wrench.

Fig. 2 Radiator drain plug
After this, unscrew the plug on the radiator filler neck, as well as on the expansion tank, to drain the liquid more quickly (Fig. 3).

Fig.3 Caps on filler necks
Unfasten the fastening of the expansion tank and lift it up (Fig. 4). In this case, the liquid will drain through the radiator drain hole. And the tank itself can be completely removed and washed.

Fig.4 Mounting the tank
To drain the coolant from the engine, you need to unscrew the drain bolt using a 13mm wrench. The bolt itself is located on the left side; you can place a watering can under it to reduce splashing of the liquid (Fig. 5).

Fig.5 Drain bolt on the engine block

After completing this operation, do not forget to put the expansion tank in place. And also tighten all drain plugs if you skip the flushing stage.

Flushing the cooling system

If there are deposits in the drained liquid or there is a transition from antifreeze to antifreeze, the system should be flushed.

To do this you need to do the following:

Flush the system with plain water through the expansion tank of the VAZ 2107. The plugs must be open;
tighten the drain plug and bolt;
fill the system with a flushing agent (you can use Liqui Moly Kuhlerreiniger or Lavr cooling system flush) with distilled water (6-7 liters);
start the engine. Warm up to 90 degrees;
leave it idling for 5-10 minutes, depending on the contamination of the system;
muffle it. Allow the engine to cool to approximately 60 degrees;
drain the flush using the same steps as removing the old fluid;
tighten both plugs;
fill with distilled water to rinse the cooling system;
start the car and warm up to 90 degrees;
turn off and let cool to 60 degrees, drain;
repeat steps 8, 9, 10 and 11 if necessary.

Filling without air pockets

To fill new fluid into the cooling system, you can use the instructions described in the book on car repair and operation. But when doing this, motorists very often end up with air jams.

Air locks can cause overheating of the VAZ 2107 (Zhiguli) engine, as well as its boiling. Very often, the heating stove may not work.

So, let's start filling it correctly:

If you have an injector, then remove one of the hoses going to heat the throttle assembly (Fig. 6).

Fig.6 Hoses for heating the throttle
If you have a carburetor, then remove the rubber hose from the fitting above the intake manifold (Fig. 7).

Fig.7 Rubber hose

The drain plug on the radiator should be closed and the drain plug on the engine block should be open. We begin to pour antifreeze into the radiator. As soon as it flows from the hole on the block, screw the bolt into place.
We continue to pour antifreeze until it flows from the places indicated in Figures 6 or 7, depending on the modification. After that we put the hoses in place.
Now fill the radiator to the top of the neck and screw on the cap. Fill the expansion tank a few centimeters above the MIN mark.
We start the car, warm it up to operating temperature, let it run for 5 minutes, then turn it off.

Thus, the filling of coolant without the formation of air pockets is completed. All that remains is to wipe off the spilled antifreeze and wait for the engine to cool. With the car now cooled down, check the level in the expansion tank again and top up if necessary.

Draining antifreeze from the radiator

The replacement process itself is very simple, but I will describe it.

Before you start draining the old liquid, be sure to move the heating tap control lever to the rightmost position, only after that the tap will open. The expansion tank cap is unscrewed, and the filler cap is also unscrewed.

We carefully inspect the lower left corner of the radiator, there we find the drain plug and unscrew it, pouring the liquid into the prepared container.

We also find a plug on the engine itself; it can be unscrewed with a key set to “13”. When you have already drained all the liquid, you need to screw back all the drain plugs.

Replacement frequency, what antifreeze to fill

According to the manufacturer's recommendation, it is necessary to replace antifreeze or antifreeze on VAZ 2107 cars every 2 years or after a mileage of 60 thousand kilometers. If the car is used in more severe conditions, then it is advisable to replace it more often - every 30-40 thousand kilometers.

In addition to the recommended coolant change intervals, there are other reasons why it is necessary to change the fluid in a car's cooling system:

Loss of properties. You can check the quality of the antifreeze used using a test strip, which is sold in the same places where the liquid itself is sold. Place the strip in the expansion tank, then pull it out. The strip comes with a color scale, according to which you can understand how much longer the car can be used before replacing the coolant.
Change in color to red or red. This means that rust has appeared in the composition.
The appearance of sediments, flakes and dense formations.

In all cases, it is necessary not only to replace, but also to check the entire engine cooling system for serviceability.

As a coolant for the VAZ 2107, you can use good Lukoil antifreeze. Or a lesser-known but high-quality product from Gazprom Neft. When replacing, you can also fill in antifreeze, preferably with G12 approval, it is safer for the entire system. You can also use original Lada G12 antifreeze, which is suitable for all cars of this manufacturer.

How much antifreeze is in the cooling system, volume table

Model	Engine capacity	How many liters of antifreeze are in the system	Original liquid / analogues
VAZ 2107	1.6	8.6	Antifreeze Lada G12
			Antifreeze Gazpromneft
			Antifreeze Lukoil

Antifreeze volume in the car

The first thing you need to know is how much antifreeze can be poured into a VAZ 2107 so that it works stably. For cars of brands such as VAZ 2101, 2105, 2106 and VAZ 2107, the volume of fluid is the same - 9.85 liters, it must be replaced every two years. Replacing antifreeze on a VAZ 2107 occurs in the following way:

The first thing you need to pay attention to is the cooling system; if it is clogged, it needs to be washed with special products or water.
Next, you need to take a spanner wrench and a container of at least ten liters to drain the old car fluid. It is very important that the radiator is cold when replacing, since antifreeze is a harmful substance, and when heated it also becomes very toxic.

The volume of coolant in a VAZ 2107 can reach up to ten liters. Antifreeze is suitable for the engine cooling system, as it prevents heat from entering the engine and cools the radiator. The cooled antifreeze is moved to the car engine using a pump. This process continues until engine operation stops. During operation, antifreeze heats up and loses its positive properties, so it must be changed periodically. The process of heating the antifreeze occurs when the car travels a distance of about 60 thousand kilometers.

Leaks and problems

Cars of this model sometimes have problems associated with the failure of some parts of the cooling system, such as a thermostat or pump. If they break down, they are replaced as an assembly, fortunately they are not expensive. Also, leaking hoses or a cracked expansion tank are considered a common problem, which also needs to be replaced.

But there is another problem with the VAZ 2107, a leaking heater valve. Because of this, there may be a smell of antifreeze in the cabin, wet floor mats on the front passenger side, or the heater may not work.

In cases of boiling or seething antifreeze in the expansion tank, you need to pay attention to 2 things. This is either an air lock or a broken cylinder block gasket. When determining the problem, in the first case the stove will blow cold. In the second case, there will be either oil in the antifreeze or light smoke from the exhaust pipe.

Fill

Carefully pour antifreeze into the hole. A signal that the required amount has been filled will be the flow of liquid from the fitting. We put the hose in place, tighten the clamp

, after which we ensure that the radiator and expansion tank are filled (the recommended level is the central position between the maximum and minimum marks).

Having completed the filling process and securely closed all the holes, be sure to start the engine, bringing it to a temperature of 70-90°C. We check the fluid level in the expansion tank

(you may have to add a little antifreeze).

The process described above is quite simple and unpretentious - after one or two times it is performed “automatically”, without additional advice or minute-by-minute checks with the instructions. Replacing antifreeze on a VAZ 2107 is quite possible even for those who have a very vague idea of what is under the hood of the car. The main thing is to carry out all manipulations in strict accordance with the recommendations, step by step, alternating actions in the required sequence.

How to replace antifreeze with your own hands in a VAZ-2107

According to the standard, the coolant in the engine must be changed every 2 years or 60 thousand kilometers.

Thus, long-term operation of a car on old fluid is fraught with rapid wear of the pump, corrosion of internal engine parts, souring of the heater tap, leaking pipes, deterioration of heat transfer, etc.

Let's pre-flush the system with a special flush.

First, you need to drain the old fluid from the radiator and engine block; they have a faucet and a drain plug, respectively.

We use a suitable hose for convenience - the liquid is toxic

In our case, a pre-heater is installed on the engine instead of a plug, so we’ll simply remove one of its pipes.

We open the caps of the radiator, tank and heater tap for better release of liquid. About 8 liters of antifreeze should drain (cooling system capacity 8.6 liters).

Now we will flush the system with water from a hose under pressure, after closing the radiator tap until clear liquid begins to come out of the block.

Then we close the drain holes, fill in the flush and fill the system with water.

To better remove air, remove one of the throttle heating pipes until liquid flows out, and put it back on.

We start the engine and, according to the instructions, let it run for 10-15 minutes, at the same time adding water and pressing the upper pipe until the air stops escaping.

This time is just enough to warm up the engine to 100 °C by the time the cooling fan turns on.

At the same time, turn on the interior heater fan at full power and open the tap to clean the radiator.

After warming up, turn off the engine, let it cool a little and drain the flushing fluid.

No large flakes or inclusions were found

We rinse the engine again with running water and let it drain thoroughly. While it is draining, you can replace worn out and stiffened pipes (it is better to replace them as a set).

In our case, this is a pair of pipes going to the thermostat, a crack appeared on one, the other, due to loss of elasticity, was leaking liquid that fell on the generator.

Now you can start filling in new antifreeze; first close all drain holes.

Approximately 8.6 liters of antifreeze should enter the system. To better fill the system, we again remove the throttle heating hose, start the engine and, as air leaves the radiator, top it up, pushing through the upper pipe.

When the air stops escaping, fill the liquid up the neck and close the radiator cap. Fill the expansion tank above the min mark.

Warm up the engine to operating temperature, keeping an eye on the pipes. Don’t forget to turn on the stove; warm air should blow from it, then hot air as it warms up.

When the fan operates, turn off the engine, check the pipes for leaks, and tighten them if necessary. In this case, the level in the tank should rise slightly and drop as it cools.

Also, over the next few days, we check whether the liquid is dripping in anywhere, since when washing, the old protective layer from additives is removed, and a new one has not yet formed.

How to properly replace antifreeze on a VAZ 2107?

Video

After repair work related to the cooling system, for example replacing the pump on the seven, the radiator, or the head gasket, you need to fill in the coolant. In a classic carburetor or injection system, you need about 10 liters to fill the system.

In order to fill in antifreeze (antifreeze) and not get an air lock, which during operation will lead to engine overheating and poor heater performance, several conditions must be met:

position the car (or jack it up) so that the front end is higher;
loosen the clamp and remove the hose from the throttle valve on the injector or the hose from the manifold on a carburetor engine;
open the plugs on the expansion tank and radiator;
check if the drain plugs are closed;
Slowly pour antifreeze into the radiator through a funnel. It will not go away quickly since the cold thermostat will be closed, to speed up the process the hose is removed from the throttle assembly;
fill the radiator to the brim and close the cap;
Reinstall the hose going to the throttle;
fill the tank to the level and close it;
start the engine and let it run;
turn off the engine and add fluid if necessary

There is another way to ventilate the cooling system, but it is shown in this video:

The machine is ready for use.

2 Comments on “How to fill antifreeze into a VAZ”

I replaced the antifreeze with a new one, but now I can’t fill the full system. Only 7 liters will fit, at least you need to fill a couple more. What is the reason?

The reason may be a closed heater tap or antifreeze remaining in the system.

Timing for replacing coolant in VAZ 2107

The purpose of the coolant in the VAZ 2107 is to remove excess heat from the car’s engine. Indeed, during operation, many parts of an internal combustion engine reach temperatures of 300 degrees C. If the engine is not cooled in time and sufficiently, it will fail. Coolant solves this problem; it is supplied to a running engine, flows through the channels, thus taking away excess heat from the internal combustion engine.

After heating, the coolant goes into the central radiator, which is constantly blown by the fan. After cooling in this unit, the liquid returns to the engine cooling channels. This is the procedure for continuous liquid cooling of the VAZ 2107 engine.

The general principle of operation of the VAZ 2107 cooling system can be studied using the diagram below.

How to understand what kind of coolant is required for a VAZ 2107 - antifreeze or antifreeze? Since we are talking about Russian cars, we should distinguish between concepts such as antifreeze and antifreeze to clarify concepts.

It should be noted that such division and differentiation is accepted only in the Russian Federation. To answer this question, you must first understand: what is coolant?

So, the basis of the coolant is ethylene glycol, less often propylene glycol. Special additives are added to it, which protect against corrosion. Each manufacturer adds different types of additives.

Let us differentiate the coolants available on the modern market according to additive production technologies:

traditional, in which additives are made from salts of inorganic acids: silicates, nitrites, amines, phosphates;
carboxylate, additives are made from organic carbonates;
hybrid, consists of a mixture of organic carbonate additives and inorganic salts (in smaller quantities, including phosphates or silicates).

So, the main difference between antifreeze and antifreeze is that coolant made using traditional technology is called antifreeze, while coolant made using carboxylate technology is called antifreeze.

Advantages and disadvantages of using antifreeze

Pros:

protective film. Thanks to the inorganic salts contained in antifreeze, a protective film is created on the surface of the cooled parts, protecting them from corrosion. The film reaches 0.5 mm. In the picture below you can see how antifreeze creates a protective layer, the disadvantage is that it interferes with heat removal;
color change. If the driver forgot to change the coolant, a clue to the need for the procedure will be the color of the liquid, which is easy to notice just by looking into the car's expansion tank. The changes are that as the antifreeze loses its useful properties it becomes darker, and completely unusable antifreeze cannot be distinguished from tar;
affordable prices. Coolant produced using traditional technology is 3 times cheaper than antifreeze.

Disadvantages of antifreeze:

replacement frequency. Antifreeze has a short lifespan, becoming unusable after 50 thousand kilometers;
negative impact on aluminum parts. The additives used to create antifreeze negatively affect the aluminum surfaces in the main radiator (which significantly reduces its service life);
due to the tendency to form condensation, it negatively affects the water pump of the VAZ 2107, as a result - premature wear of its impeller.

Let's look at the advantages and disadvantages of using antifreeze

Pros:

service life is longer - 6 liters of antifreeze is enough for 150 thousand kilometers;
temperature selectivity - due to the presence of carbonate additives, antifreeze more actively protects the engine surface that is heated the most;
antifreeze does not interfere with heat dissipation, and also protects corrosion areas with the help of local layers;
long engine operation due to temperature selectivity and timely engine cooling with antifreeze;
there is no condensation, which means antifreeze cannot damage the radiator and water pump of the VAZ 2107.

The disadvantage of antifreeze is obvious - its high cost. In terms of price, it is on average 3 times higher than antifreeze.

Draining procedure

To work you will need:

Container with a capacity of 10 liters or more. Aluminum pans are ideal.
13mm open-end or socket wrench.
Pliers.

The last tool may only be needed if the plug on the radiator is stuck and you cannot unscrew it by hand. Before starting work, you need to cover with film all unprotected areas of the electrical wiring that could get liquid to prevent a short circuit.

Instructions for replacing antifreeze

Antifreeze, compared to water, is quite resistant to frost - it does not freeze. It is also not a source of scale, which means it does not clog the cooling system.

But, subjected to constant temperature influences and fluctuations, antifreeze loses its properties during operation:

the boiling point decreases and accordingly becomes equal to the boiling point of water;
The fluid may freeze, resulting in a cracked reservoir or cracked cylinder block.

For these reasons, it is necessary to change antifreeze at least once every six months. It is important to do this during seasonal car maintenance. Timely replacement of coolant will help avoid unpleasant consequences, unwanted repairs and unnecessary waste of money.

So, replacing antifreeze on a VAZ 2107 includes draining the antifreeze, flushing the cooling system (if necessary) and replacing the used coolant with new antifreeze or antifreeze.

You should first prepare the following materials and tools:

canister with new antifreeze (6 liters);
funnel;
wrench “13”;
open-end wrench “16”;
key “12”;
an empty container of 6-10 liters (a cut canister is often used);
a clean rag made from natural fabrics;
Protect your hands with gloves.

Drain

Draining antifreeze from the VAZ 2107 tank includes the following sequence of actions:

Place the car on the inspection hole so that the front wheels of the car are higher than the rear ones;
Move the lever (located on the dashboard) that supplies warm air into the cabin as far as possible to the right;
Open the hood and unscrew the expansion tank cap;
Unscrew the central radiator cap;
Using a 16mm open-end wrench, unscrew the drain plug located on the cylinder block. Place a container prepared in advance, as liquid will begin to pour out. It may take up to 10 minutes to completely drain the spent fluid;
Using a “12” wrench, unscrew the plug on the radiator drain hole, located in its lower part. A special bucket or container is used for draining;
Remove the belt holding the expansion tank by hand. You should raise the tank as high as possible, thus draining the remaining antifreeze from the hose connected to the tank;
After completing the procedure for draining antifreeze or antifreeze, the tank is installed in place, all drain holes are then closed and the cooling system must be flushed.

Flushing

Flushing the cooling system is an important procedure. It determines how effectively the VAZ 2107 engine will be cooled. A number of car owners believe that flushing the cooling system is a waste of time, and immediately fill in new antifreeze or antifreeze after draining the used fluid. This causes clean and dirty fluid to mix, negatively affecting performance.

You can flush the cooling system using either water or special products.

Cleaning OS with water

Flushing the cooling system with water is only allowed if there is no flushing liquid. The fact is that ordinary water contains impurities that contribute to the formation of scale. If the choice is water, it is better to use distilled water.

Sequencing:

Water is poured into the expansion tank of a VAZ 2107;
Let the engine idle for 30 minutes;
After half an hour has passed, the engine is turned off and the water is drained;
Repeat the procedure until the water drained from the system is as clean as the water being poured in;
Stop the procedure after clear water appears.

Why do they change antifreeze?

The cooling system of many modern cars is liquid. That is, heat transfer is carried out by a liquid that circulates through a system of tubes and, cooling in the radiator, returns back to the engine to receive a new portion of heat. The VAZ 2107 engine cooling system initially used water, but later, due to reduced resistance to negative temperatures, it was replaced with antifreeze.

Antifreeze, compared to water, has good resistance to frost and does not freeze at all. In addition, it is not a source of scale, which means it does not clog the cooling system.

In the process of constant temperature exposure, antifreeze may lose its properties. That is, first of all, its boiling point decreases and becomes equal to the boiling point of ordinary water. Secondly, such fluid can easily freeze and cause a cracked reservoir, and in the worst case, a cracked cylinder block. That is why antifreeze must be changed at least once every six months during seasonal vehicle maintenance in order to avoid undesirable consequences.

This is interesting: What kind of oil is poured into the Hyundai Creta

Cleaning the OS with a special agent

You can also flush the cooling system with a product containing special impurities. This is a more expensive way to clean the system, but in the long term the most appropriate option, since the product removes from the tank:

fat deposits;
dissolves and removes scale from the tank;
organic compounds.

Today, VAZ 2107 car owners use flushing fluids, the two main components of which are acids and alkalis. Car owners prefer LAVR, which costs from 700 rubles.

The sequence of actions when flushing the cooling system with a special liquid is no different from flushing with water. The only significant difference is the operating time of the motor, which is indicated on the canister of liquid.

After flushing the radiator tubes of a VAZ 2107 with LAVR, the positive result is obvious.

Bay

After the actions have been taken, it is time to fill in new antifreeze (or antifreeze, if such a decision was made by the VAZ 2107 car owner).

How to replace antifreeze on a VAZ 2107 injector? Sequencing:

Open the radiator cap and insert a funnel into it;
The following actions are carried out with the help of a partner. The plug is removed from the cylinder block and antifreeze is slowly poured in. At the same time, tighten the bolt, and as soon as the antifreeze flows out of the BC, the bolt is tightened. Such a maneuver will help eliminate the creation of air jams;
Pour antifreeze into the radiator until it is completely filled;
Pour antifreeze into the expansion tank until it reaches the radiator. Then screw on the tank cap;
The tank is the last to be filled. The level corresponds to the norm. Upon completion of all procedures, the lid is screwed on;
Start the engine and warm it up to operating temperature to check the proper operation of the cooling system. The cooling fan should work and the temperature should drop, which means the system is in working order.

This completes the replacement of antifreeze in the VAZ 2107 injector. There is no need for special knowledge or special equipment to perform this procedure. It is enough to have a set of tools and decide on a place.

You should also pay attention to the fact that antifreeze, like antifreeze, is a toxic substance. Therefore, a number of safety measures are observed when replacing coolant on a VAZ 2107:

Do not dump antifreeze on the floor in the garage or on the ground in the yard. The liquid is poisonous and can harm the human respiratory system;
Protect your skin and do not allow antifreeze to get on your hands or in your mouth. A number of motorists check the nature of the fluid used by dipping their finger into the reservoir. The consequences may be poisoning or burns;
If antifreeze gets on your hands, face, eyes, or mouth, rinse with a stream of cold water and take the victim to a specialist, or call an ambulance. Antifreeze, like antifreeze, is first of all a liquid hazardous to health, and only then a necessary component for the proper operation of a VAZ 2107 car;
Do not have a snack while working on replacing antifreeze in the VAZ 2107. In this way, you can swallow the evaporated toxic liquid;
Wash your hands after completing the antifreeze replacement procedure. This is done several times with running water, after which the skin should be protected with a special cream (especially important if antifreeze gets on the skin of your hands).

By adhering to the described recommendations, the driver of a VAZ 2107 car will protect both himself and others from unpleasant consequences, poisoning, burns, etc.

Flushing the cooling system

Flushing the cooling system is a very important procedure, since the cooling efficiency of the VAZ 2107 engine depends on it. At the same time, many car enthusiasts prefer not to flush the cooling system, but to fill in new antifreeze immediately after draining the old one. As a result, the remnants of the old antifreeze are mixed with the new coolant, which has an extremely negative effect on its performance. That is why it is strongly recommended to flush the engine cooling system before adding new antifreeze. This can be done either with water or with the help of special compounds.

Flushing the cooling system with water

It should be said right away that it is advisable to use this washing option only when there is no good washing liquid at hand. The fact is that ordinary water contains impurities that form scale. And if the driver still decides to flush the cooling system with water, then the best choice in this situation would be distilled water.

Water rinsing sequence

Distilled water is poured into the expansion tank of the VAZ 2107.
Distilled water is poured into the expansion tank of the VAZ 2107
The engine starts and idles for half an hour.
After this time, the engine is turned off and the water is drained.
The water drained from the VAZ 2107 must be as clean as the water being poured
After this, a new portion of water is poured into the tank, the engine starts again, runs for half an hour, then the water is drained.
The procedure is repeated until the water drained from the system becomes as clean as the water being poured. Once clean water appears, washing stops.

Flushing the cooling system with a special compound

Flushing the cooling system with a special composition is the best, but also very expensive option. Because cleaning products effectively remove residual grease, scale and organic compounds from the system. Currently, VAZ 2107 owners use two-component flushing fluids, which contain both acids and alkalis. The most popular liquid is LAVR. Cost - from 700 rubles.

LAVR flushing fluid is the optimal choice for flushing the VAZ 2107 cooling system

Sequence of flushing the system with a special liquid

The sequence of flushing the cooling system with a special composition is practically no different from the sequence of water flushing mentioned above. The only difference is the operating time of the motor. This time must be clarified (it depends on the composition of the selected flushing liquid and must be indicated on the canister with flushing).

Comparison of VAZ 2107 radiator tubes before and after flushing with LAVR

Selection of antifreeze and antifreeze for VAZ 2107

Considering the previously mentioned advantages, most motorists opt for antifreeze, because saving on coolant will lead to the need for engine repair.

Antifreeze of both domestic and Western production is suitable for the VAZ 2107. Owners of this brand of car prefer, for the most part, Lukoil G12 RED antifreeze.

Antifreeze A40M is considered the most inexpensive domestically produced coolant.