Under what circumstances does a car need to add water?

[AmirFitz]

There are three places in a car where water can be added: the radiator, the windshield washer fluid reservoir, and for large vehicles traveling on mountain roads, a water spray device to lower the temperature of the brakes. Reasons for adding water to a car: 1. Poor engine cooling: When the radiator boils over, the engine's cooling is compromised, leading to excessively high temperatures. This causes components to expand, reducing the clearance between parts, and also lowers the viscosity of the engine oil. In such conditions, wear on components accelerates. If not addressed promptly, the engine may suffer severe damage, leading to a major mechanical failure. 2. There are several reasons for a car's radiator to boil over, including: the effects of hot weather; overloaded air conditioning operation and faulty cooling components; and issues with the car's cooling system, such as radiator leaks, insufficient coolant, degraded coolant, or blockages in the coolant circulation system.