How often should the car radiator water be replaced?

[TylerLee]

Typically, we mainly rely on observing the upper and lower marks of the coolant reservoir, keeping the water level in the middle. Generally, it's best to replace the coolant every 20,000 kilometers. However, this is not a one-size-fits-all rule. It depends on the surrounding environment and vehicle usage, requiring regular checks of the water level. In many cases, no top-up is needed. However, long-distance drivers should check the level before embarking on a trip. If water is not added for a long time and the radiator runs dry, it can cause the engine to overheat, and even engine seizure is possible! This would certainly cause trouble for your journey.