For vehicles

In automotive applications, the coolant is the fluid that absorbs heat from the engine and then dissipates it through the radiator. It is also dissipated through the heat exchanger in the passenger compartment when you crank your heat in the winter.

Coolant, which is commonly called antifreeze, is a mixture of ethylene or propylene glycol and water, usually in a 50/50 ratio.

Servicing the coolant involves draining and/or flushing your car's cooling system and then replacing the old coolant with fresh coolant.