Why should automobile antifreeze be replaced regularly and in time?

The manufacturer's suggestion is to change it once a year, but you can consider it according to your own use and car condition. You can change it once a year as long as you run, or once every two years if you run less, but it is recommended to change it ~ ~ ~

Antifreeze, also known as coolant, is the condition to ensure the normal operation of automobile engines. Rust and scale will limit the flow of antifreeze in the cooling system, reduce heat dissipation, lead to overheating of the engine and even cause engine damage. Oxidation of antifreeze will also form acidic substances, which will corrode the metal parts of the water tank, resulting in water tank damage and water leakage. The solution to the water tank problem mainly lies in the routine inspection on weekdays. Always check whether the water tank leaks or corrodes, and clean, replace or add antifreeze on time to raise the boiling point and prolong the service life. Generally speaking, antifreeze should be replaced after driving 20,000 kilometers or 1 year. This can improve the boiling point, prevent scaling and corrosion, improve the heat dissipation effect, make the water pump play a lubricating role, and avoid and eliminate the damage of instantaneous high temperature caused by bubbles to the engine.

Try not to add water when antifreeze is insufficient, especially in summer. Because chlorine contained in tap water will corrode, rust and block the water tank, engine and other systems, the cooling system will not cool well, resulting in excessive engine temperature and vehicle damage. (Normal maintenance items of automobiles: change the oil and three filters every 5,000 kilometers, and change them at the same time. Change the transmission gear oil, booster brake fluid and spark plug every 10000 km. Replace the engine antifreeze every year, and clean the throttle, EFI and oil circuit at the same time. Change the position of four tires diagonally every 10000 km, and change tires every 50000 km).