Can I Add Water If the Coolant Is Insufficient?

[DelDawson]

In emergency situations, if the coolant is insufficient, you can add water. However, for driving safety, it is recommended to drain the coolant from the system as soon as possible and refill it with new coolant at a repair shop. The details are as follows: 1. The benefits of coolant include antifreeze, cleaning, rust prevention, effective cooling, and a high boiling point, which water cannot meet. Adding ordinary water can easily cause rust and clog the radiator. 2. In emergencies, you can add water, preferably distilled water, just to prevent the engine temperature from rising too high due to insufficient coolant. 3. After adding water, the freezing point decreases. At this time, you should promptly check the freezing point of the coolant and decide whether to drain the water based on the surrounding temperature.