What is engine coolant

Coolant iscarAn indispensable part of the engine.It's in the enginecooling systemIn the middle cycle, the excess heat generated when the engine is running is taken away, so that the engine can run at normal operating temperature. When the coolant is insufficient, the engine water temperature is too high, which will cause damage to engine parts. Therefore, once the car owner finds that the coolant is insufficient, it should be refilled in time.

1. Coolant composition The concentration determines the performance of the coolant. Engine coolant is composed of ethylene glycol, anti-corrosion additives, defoamer and water. Ethylene glycol is the core component of the liquid temperature range. Through the fusion with water, the high-concentration coolant cannot boil or freeze between 197 and -60 degrees. However, these products are priced higher. The manufacturer will adjust the ratio of ethylene glycol in the coolant according to the area and use. Different brands of cars use different colors of coolant, such as pink, blue, etc. These are the different color effects produced by the colorant so as to be more obvious when the coolant leaks, and the color difference will be very significant to distinguish different products to prevent them. The wrong owner has mistakenly added products that are not suitable for the car. common problem 1. Can coolants of different brands be mixed with each other?

In principle, it is not recommended to mix coolant products of different brands, because different manufacturers will use different coolant formulations and the proportion of additives will also be different. If these different coolants are mixed with each other, some unpredictable chemical reactions may occur, which will corrode the pipe joints. The sealing rubber ring is improperly sealed, causing water leakage. 2. Why should the coolant be changed regularly?

The coolant contains additives and defoaming additives, these additives will gradually lose their due function during use, so that the cooling system cannot be well protected. In other words, on the premise that the cooling system does not leak, the coolant temperature control will not change. The failure of additives, especially anti-foam additives, will generate bubbles in the coolant when the pump impeller is stirred, which will greatly weaken the role of the coolant. Therefore, it is best to replace the coolant on time. When the coolant is lost due to leakage or other reasons, some owners directly report toWater tankWater injection. This is not recommended, because the boiling point and freezing point of the diluted coolant will be greatly reduced. Therefore, when conditions permit, try to fill the original coolant, of course, there will be leakage. The water should be repaired as soon as possible.