How often should the antifreeze in the car be replaced?

1 Answers
MichaelAnn
07/30/25 8:21am
The antifreeze in the car should be replaced every 2 years or 40,000 kilometers, and the replacement interval can be adjusted based on actual usage. Antifreeze, also known as non-freezing liquid, is officially called antifreeze coolant. To ensure the car can still operate in low winter temperatures, engine coolant is mixed with substances that lower the freezing point of water, acting as antifreeze agents to prevent the cooling system from freezing in cold weather. Before the scheduled replacement of antifreeze coolant, if the level is found to be below the minimum mark, it should be topped up promptly to prevent overheating, which could impair the engine's cooling efficiency. Proper use of coolant not only protects the engine's cooling system and enhances heat dissipation but also improves engine efficiency and extends its service life.
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