Do you need to change the antifreeze of the original car for 8 years?

Exposing antifreeze to high temperature (100) and low temperature (0-) every week will definitely affect its chemical composition and need to be replaced regularly. But the replacement cycle must be in accordance with the doctor's advice (see maintenance manual). Different brands of vehicles use different materials. The antifreeze used by Mazda is L22, and the replacement cycle is 10 years or 200,000 kilometers (the second time is 5 years or 65438+10,000 kilometers), and other brands are 2 years or 40,000 kilometers. Please refer to the maintenance manual for details. The antifreeze of the original car needs to be replaced after 8 years. 1. First of all, it is obvious that not replacing antifreeze will definitely affect the vehicle. See the analysis of working environment of antifreeze for the impact. 2. Second, the full name of antifreeze must be: engine antifreeze. As the name implies, it has the function of anti-freezing and cooling, and it also has the function of cleaning in practical work. Its working environment (vehicle-related system) includes engine, cooling system (water pump, water tank) and heating system (water supply tank and heating tank). Therefore, when there is a problem with antifreeze, it will affect the function of the above system. 3. Third, look at its composition. Since it is engine coolant, it depends on the working environment of the engine. The engine temperature is above 100 when the vehicle is running, and it may be -30 when it is parked. Therefore, the composition of antifreeze is not water, but special chemicals. The specific ingredients are not found in daily life. Therefore, in the daily maintenance of vehicles, try not to add water. Adding water in the maintenance process will affect the composition of antifreeze and its normal function.