What to Do If the Newly Replaced Coolant Always Overheats?

[McJohn]

During the coolant replacement process, ensure the engine is running to expel air, then check the fluid level and top up the coolant. Repeat this process until the fluid level stabilizes between the upper and lower limits. Below is an introduction to coolant: 1. Introduction: Coolant prevents the freezing of the cooling liquid during cold winter parking, which could otherwise crack the radiator and damage the engine cylinder block. Its full name is antifreeze coolant. Many people think coolant is only used in winter, but it should be used year-round. 2. Composition: Over 95% of coolants used domestically and internationally are ethylene glycol-based aqueous solutions. Compared to tap water, ethylene glycol's most notable feature is its antifreeze properties, whereas water cannot prevent freezing. 3. Uses: Coolant is used in the cooling systems of cars, train internal combustion locomotives, tractors, ships, engines, radiators, and various mechanical equipment, including diesel and gasoline engines, as a cooling liquid.