Coolant definition and meaning

Coolant is a fluid that helps keep your car’s engine cool. It does this by absorbing heat from the engine and then circulating it away from the engine. Coolant also helps prevent your engine from rusting and freezing in extreme temperatures. Freeze damage can occur if the coolant level gets too low and the water in the system turns to ice. This can expand and crack the engine block or other parts, causing serious damage. You should check your car’s coolant level regularly to make sure it doesn’t get too low. If it does, you may need to add more coolant to your car.