Can You Add Mineral Water to a Car's Coolant?

[Willie]

You cannot add mineral water to a car's coolant. Antifreeze is a mixture of ethylene glycol and water, with a much lower freezing point and a much higher boiling point than water. Below is a detailed introduction to automotive antifreeze: Overview: Coolant, whose full name should be antifreeze coolant, refers to a coolant with antifreeze properties. Antifreeze prevents the coolant from freezing and cracking the radiator or damaging the engine block during cold seasons. Antifreeze should not only be used in winter but should be used year-round. Others: Coolant consists of three parts: water, antifreeze, and additives. Depending on the antifreeze component, it can be classified into alcohol-based, glycerol-based, ethylene glycol-based, and other types of coolant. In regular car maintenance, the engine antifreeze should be replaced every year. The main component is the solid form of CO2.