Can car coolant be mixed? What is the effect of adding more coolant?

If you say that coolant can't be mixed, you will definitely scold me. Because many car owners must have seen the repair shop outside, and the experience of the old drivers on the forum. Appearance is deceptive. If you don't know the secret, mixing will cause unpredictable damage to the engine.

▶If it is coolant with the same composition and color, it can be mixed

There are many brands of car coolants, with different models and colors. Common car coolants are mainly water-based ethylene glycol, but also propylene glycol and glycerol. There are also many colors, the common ones are green, blue and pink. These car coolants cannot be mixed, because different brands, different models, and different colors of coolants have different formulas, ingredients, and ratios. If you mix them , There will be a chemical reaction between a variety of chemical components, which will make the coolant lose its original characteristics.

The extra coolant will expand during the use of the car and will be discharged from the pressure relief valve. There is no effect, but some stains will be left, but it is best to use a syringe to pump out the coolant that exceeds the maximum water level. . Generally, the filling amount of the coolant is between the maximum water level scale of max and the minimum water level scale of min, and it must be added under the condition of a static car. The water level of the hot car at high temperature will be inaccurate.

Notice:If the car owner chooses fake and inferior products, adding more coolant at this time will accelerate the damage of the engine, and the overflowing liquid will also corrode electrical wires and other equipment.

Coolant replacement cycle

Coolant needs to be checked and replaced regularly, and most family cars are replaced every two years or about 40,000 kilometers. Of course, this is only a reference replacement cycle, which should be determined according to the actual use of the vehicle. If it is a commercial vehicle, such as a taxi, it needs to be replaced more frequently.