How often should water be added to a car's radiator?

[DiReid]

Normally, the coolant level in the radiator should be between the MIN and MAX marks. When the coolant level in the reservoir drops below the minimum mark, it's time to add water promptly. Here are the details: 1. Replacement cycle: The coolant in the radiator should generally be replaced every two years or every 30,000-40,000 kilometers driven. Vehicles with high usage frequency should consider replacing it earlier. 2. Precautions: Only add coolant, never use tap water. Tap water tends to boil easily and contains many impurities that can lead to rust and scale formation. Here are some additional details: 1. Choose coolant based on the vehicle's origin: Domestic and imported vehicle coolants should not be mixed. Therefore, when purchasing, select the appropriate coolant based on your vehicle's origin. The rust inhibitors, defoamers, and dyes in imported vehicle coolants have different chemical compositions from those in domestic coolants. Mixing them can cause chemical reactions, leading to scaling, corrosion, and other adverse effects. 2. Try to choose all-season coolant. Most coolants available today are all-season, which eliminates the hassle of changing coolant in winter.