Coolant is a mixture of distilled water and alcohol. Also referred to as antifreeze, its primary function is to absorb the extreme heat generated by a running engine
When the engine is running, the coolant continuously circulates through the engine and back through the radiator. The radiator is affixed to the front of the vehicle, just behind the grill, to maximize air intake. As air passes through the fins on the radiator, it cools the circulating coolant.
The benefits of antifreeze/coolant are numerous and that’s why they’ve become a necessity for vehicles over time