Any car owner knows what antifreeze and why you need the car. Without this fluid can not be operated any vehicle, including the Chevrolet Lacetti. How to drain the coolant from the given model and cover with a new one after flushing the system - see later in this article.

Antifreeze, why it is needed, where it is poured

Fluid for cooling the motor (it is still called "anti-freeze", "refrigerant" and "radiator liquid") is required to perform a number of vehicle functions. Cooling system - one of the primary tasks of the refrigerant, but it also performs other functions, namely:

1. It cools the hydraulic fluid present in the automatic transmission.
2. Lubricates the pump power unit, through which it flows.
3. Warms the driver during the cold season, passing through the heater core.

In addition, the composition of antifreeze produced today contains special substances that counteract the appearance of scale deposits and prevent occurrence. However, it is worth noting that such chemical substances have a relatively short validity period. Poured antifreeze into a special expansion tank, which is located in the engine compartment.

Coolant or antifreeze, how often to change antifreeze

Manufacturers recommend to change antifreeze every 40-50 thousand kilometers, which will completely eliminate overheating of the engine. Professionals working in the workshop, it is advised to change the coolant at least once a year, or it may be rust.

What antifreeze select criteria for the selection of a cooling liquid

By the choice of the coolant should be approached very seriously. First read the instruction manual of the car, as different types of motors filled with different antifreeze. There are a number of basic criteria for the choice of refrigerant:

1. Slow crystallization temperature.
2. Thermal conductivity.
3. Quite a high heat capacity.

In addition to the aforementioned basic criteria coolant must not expose the metal to corrosion, which is achieved by special additives inhibitors, and should not form a foam during the operation of the power unit.

Why not be mixed in the former and new antifreeze antifreeze solution

In releasing today fluids contain substances that prevent rust. Upon mixing of old and new antifreeze their anticorrosive characteristics are greatly reduced. Duration of corrosion fluid essentially depends on it being in a variety of corrosion-resistant components.

As long as they are kept in antifreeze in the required amount, needs to be replaced there. However, with a decrease in their number appears likely t. N. electrolytic corrosion in the engine and the car radiator. As a result, the replacement refrigerant is better not to delay.

How to check the antifreeze

The refrigerant is filled only in the pre-washed system. To check the antifreeze, use special strips for testing. In addition, it is worth noting that some variation of antifreeze sold in concentrated form. Before pouring a refrigerant, it should be diluted with distilled water.

Tools, fixtures, consumables

1. A set of keys.
2. Screwdriwer set.
3. Hose.
4. The capacity of 8-10 liters.
5. New antifreeze.
6. Special means for flushing the system.

accident prevention

Drain the antifreeze should be carried out of the reach of small children, as the coolant of extremely toxic. It is strictly forbidden to pour it into the water. refrigerant substitution is carried out on a cold engine.

How to merge antifreeze

1. Drain coolant can drain through the faucet, which is located on the radiator, for which several turns unscrew the drain valve.
   
2. To prevent draining antifreeze on housing and other parts of the body, it should pull the hose to the tap.
   
3. Under the drain cock substitute container to drain the coolant.
   
4. Turn off the tap and pour out the antifreeze.
   
5. To speed up the drain with a tank can remove the lid.

How to flush the system

1. When all coolant has drained, washed with a special system of washing agent, which is necessary to fill a surge tank.
2. Then we start the power unit and give him to work for a while until the temperature is raised to the working.
   
3. It is mandatory to include at full capacity the stove, so that all the air bubbles out of the system.
4. When the engine warms up, it should be muted and wait until it cools down.
5. Further merge washing liquid.

How to pour antifreeze, step by step guide

1. Open the expansion tank and carefully fill to antifreeze.
2. Twist-Off cap.
3. We see that nowhere fluid leaks.
4. We turn on the engine and wait for it to warm up to operating temperature.
5. Next, turn off the power unit and wait for a while until it cools down.
6. We are checking the liquid level and to replenish it when necessary.

Tips pro, how to dispose of antifreeze

The spent coolant may not be allowed on the open ground or into drains. Keep antifreeze should be merged only in sealed containers. To date, there are specialized companies that are engaged in recycling of refrigerant. The most the best option is to resort to their help.