Can Water Be Added to Coolant?

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Water should not be added to coolant. Antifreeze should not be mixed, as different formulations can easily cause chemical reactions. More importantly, adding water to save trouble when the coolant is insufficient can lead to sediment formation and increase the risk of partial freezing. Antifreeze prevents the coolant from freezing during cold seasons when the vehicle is parked, which could otherwise cause the radiator to crack or damage the engine block. Below is relevant information about antifreeze: 1. The primary purpose of antifreeze is to transfer heat to the radiator during engine operation, dissipating the heat to maintain the engine's normal working temperature. When replacing antifreeze, it is best to do so at a 4S shop or professional repair shop. When topping up antifreeze, try to use the same product as the vehicle's original to avoid chemical reactions. 2. The freezing points of antifreeze available on the market generally include -15°C, -25°C, -30°C, and -40°C. The general rule of thumb is to choose an antifreeze with a freezing point at least 10°C lower than the lowest temperature in your region.