How Often Should the Coolant in a Sedan Be Replaced?

[StReed]

Generally, the coolant in a sedan should be replaced every two years or when the car reaches 40,000 kilometers. Here is some relevant information about coolant: 1. Antifreeze coolant is not only used to "prevent freezing" in winter but also to "prevent boiling" in summer. In extremely cold regions, do not replace antifreeze with water, as it can cause the engine block to freeze. 2. Do not mix different brands or types of antifreeze, as the differing chemical compositions may render them ineffective. If switching to a different brand of antifreeze, drain the existing coolant from the engine, thoroughly clean the cooling system, and then add the new antifreeze.