How often should car antifreeze be replaced?
2 Answers
Car antifreeze generally needs to be replaced every two years or every 40,000 kilometers. Since the driving conditions of each vehicle vary, the specific replacement interval can be determined based on actual usage. During routine car maintenance, it is essential to regularly check the antifreeze to see if the level has decreased or if it has deteriorated. The full name of antifreeze is antifreeze coolant, meaning it is a coolant with antifreeze properties. Antifreeze prevents the coolant from freezing and causing damage to the radiator or engine block during cold winter parking. Antifreeze is a type of coolant that contains special additives, primarily used in liquid-cooled engine cooling systems. It offers excellent performance in preventing freezing in winter, boiling in summer, and protecting against scale and corrosion throughout the year.
Having driven for so many years, I know that antifreeze is not something to be taken lightly. It's generally recommended to replace it every two years or around 50,000 kilometers, but the exact interval depends on the vehicle's manual as different brands have different requirements. For example, my old Japanese car's manual states that the antifreeze must be replaced every two years; otherwise, it can lose effectiveness, reducing its protective properties. In summer, high temperatures can cause the engine to overheat and stall, while in winter, the coolant may freeze and crack the pipes. I once delayed the replacement for three years, only to find the fluid cloudy with impurities and some corrosion in the radiator, costing me unnecessary repair expenses. I recommend checking the fluid level and color regularly—if it turns yellow or becomes cloudy, it's time for a replacement. Don't wait until the temperature gauge warns you; safety comes first. One more thing: when choosing antifreeze, make sure it matches your vehicle's specifications—don’t go for cheap options that might be incompatible.
