What are the main components of antifreeze?

1 Answers
OEmilio
07/30/25 2:43am
Antifreeze is mainly composed of: 50% purified water, 40% methanol, and 10% other substances. Antifreeze is a coolant containing special additives, primarily used in liquid-cooled engine cooling systems. It prevents the coolant from freezing and expanding in cold winter conditions, which could otherwise crack the radiator or damage the engine cylinder block or head. Antifreeze offers excellent performance in preventing freezing in winter, boiling in summer, and resisting scale and corrosion throughout the year. The antifreeze level should be between the max and min marks, which can be checked at the antifreeze reservoir. It is generally recommended to replace the antifreeze every 2 years, with a replacement volume of 4 to 5 liters. After replacement, the cooling system should be bled.
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