The Radiator Coolant is an antifreeze coolant, which is highly needed for the radiators. It helps the car engine to stay cool. In this way, the engine can last longer. The levels must be checked, when it is filled. Radiator Coolant is best for all types of vehicles. It prevents the freezing of coolant system and can deal with the extreme temperatures of winter. In addition, this can lessen the engine rust as well as corrosion, occurring in the coolant system.