Antifreeze coolant, also known as antifreeze, is a coolant with antifreeze function. It is mainly used in liquid-cooled engine cooling systems, and can effectively prevent the coolant from freezing and bursting the radiator and freezing the engine cylinder block or cover when the car is parked in cold winter. Although many people think that antifreeze is only needed in winter, in fact, antifreeze should be used all year round. More than 95% of cars use ethylene glycol water-based antifreeze, which not only prevents freezing in winter, but also has an extremely high boiling point and can prevent scale and corrosion all year round.