Can water be added to a car's coolant?

[DiAlexandra]

Water should not be added to a car's coolant. Reasons why water should not be added: Typically, the freezing point of coolant is around -25°C. After adding water, the new coolant's freezing point rises to approximately -10°C, which can cause the coolant to freeze, severely damaging the radiator or cooling system. Additionally, the proportion of anti-corrosion additives in the coolant will become imbalanced, reducing its anti-corrosion functionality. Introduction to coolant: Automotive coolant is a medium that protects the car's engine. It primarily serves two purposes: one is to cool the engine during operation, and the other is to prevent the cooling system from freezing in low winter temperatures.