How to change the coolant: step-by-step instructions, features and recommendations

Coolant is one of thecomponents of an uninterrupted and correct operation of engine components. Sooner or later, there is a need to replace the coolant in the car. Every car owner should know how to change the coolant, after all, there are not always available funds for STO services.

Also, do not ignore the fact that,that not all stations are conscientious employees. Therefore, if you want to do well, it's best to do it yourself. So, today we will answer the question of how to change the coolant.

There are many types of coolants for transportfacilities. However, its choice should be taken with maximum responsibility, since the coolant of poor quality can lead to engine overheating. And this will turn into global problems with the power unit.

For several decades many car owners used water. However, its use had several main disadvantages:

• Low boiling point, which led to engine overheating on hot summer days.
• Freezing of water at 0 ° C, which causes the expansion of the water volume, which eventually leads to the destruction of the block.
• Scaling on metal parts.

Kinds

To get rid of such problems it was possible with the use of antifreeze (non-freezing liquid). There are several types:

1. Antifreeze based on glycol.
2. Based on propylene glycol.
3. Tosol.

All of the listed liquids perfectly perform the functions of observing the temperature regime of the engine.

It is worth remembering that you can not mix these liquids. Using one of the above coolants, you can forever forget about the problems of boiling and freezing it in the engine.

Why should I change

Cooling fluid is needed to controlmotor temperature. When the engine is running, fuel burns. In this case, a high temperature is detected inside the cylinders. As a result, thermal energy heats the metal elements of the engine - these are pistons, cylinder head, cylinders.

Thanks to a well-thought-out liquid cooling systemcollects heat and transfers it to the radiator. In addition to the main function of controlling the heat and returning it from the engine to the radiator, the coolant has additional functions. The liquid is also intended for lubrication of the water pump of the motor. The replacement of the coolant is approximately 50,000 km. When this period is reached, the tosol loses the properties of heat release.

In addition, in OZH begin to appearpollutants that flow throughout the cooling system. If you do not make a timely replacement of the coolant, the dirt begins to clog the water channels of the engine, which subsequently leads to engine overheating and expensive repairs.

What to prepare for replacement

When answering the question how to change the coolant, it is necessary to prepare:

• Latex gloves.
• Capacity for draining the coolant.
• A set of keys.
• Overpass or lift.
• Pure water.
• New coolant.

How to change the coolant on VAZ-2107

After the driver picked up the best,his opinion, refrigerant, you need to make a replacement for the liquid. Initially, it is worthwhile to drive the car to a pit, a lift or a flyover, by placing wheels underneath the wheels, and setting the gear lever to the 1st speed position.

Next, you need to disconnect the "minus" terminal from the battery. If the car has additional crankcase protection, it must be unscrewed, as in some cases it significantly hinders drainage of the coolant.

How to change the coolant

1. A prepared container for the old coolant is installed under the radiator drain cock. It is necessary to wait for the full discharge of liquid from the radiator.
2. Next, you need to move the tank under the left side of the engine and unscrew the drain bolt from the cylinder block. For best effect, open the cover on the expansion tank.
3. After all the liquid from the engine has been drained, it is necessary to screw back all the drain plugs.
4. To properly change the coolant,should be flushed. It is necessary to pour well boiled water into the system. In old versions of cars should be poured into the radiator and the expansion tank. On the newer samples, the car is fitted with a radiator without a cover, so the filling is done only through the expansion tank.
5. Once the water is flooded, you need to start the engine and allow it to run for 5-10 minutes to rinse the cooling system.
6. Drain the water in the same way.
7. Then pour the prepared liquid. To ensure that there is no air in the system, it is necessary to press on the nozzles that approach the radiator. This method is suitable for those cars that have a radiator with a filler neck. You can also go to the hillock, open the radiator cover and thoroughly degass. Then you can wrap the lid.
8. There is another way that is suitable forauto with radiators without a cover, only need an assistant. After unscrewing the return hose that fits the expansion tank, gradually pour the liquid into the tank. As soon as the liquid goes through the return hose without interruption, it will be clear that the cooling system is full. It is necessary to put on a hose on a tank and to add a liquid to the necessary level.

Replacing the coolant sensor

It is worth remembering that to monitor the conditionantifreeze it is necessary to check the serviceability of the coolant temperature sensor. Therefore, you need to know where this device is located. In some cars (for example, VAZ-2114) two temperature sensors are installed. One outputs the temperature to the instrument panel, and the other switches the fan drive on or off.

Before thinking about how to change the sensorcoolant, you need to perform a test. The test of the element should be made before replacing the coolant. When the ignition is switched on, the temperature arrow rises quickly upwards - it is necessary to disconnect the connector from the device, and if the needle starts to fall, then the sensor needs to be replaced. In all vehicles, this coolant temperature control element is installed on the cylinder head.

How do I change the engine coolant temperature sensor? To do this you need:

• Drain the coolant from the system.
• Remove the "minus" terminal from the battery.
• Disconnect the connector from the sensor.
• Using a key, unscrew the sensor and screw in a new one.
• Next, connect the wires to the sensor.

This completes the sensor replacement procedure.

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