The Fleetguard Liquid Supplemental Coolant Additives Bottle is designed to provide superior engine protection in heavy duty diesel applications. It helps to maintain proper chemical concentration in the cooling system, ensuring optimal performance and longevity of the engine. It also provides superior engine protection against cavitation and corrosion. This product is easy to use and helps to keep your engine running smoothly and efficiently. FleetPride is your First Click in Heavy Duty®.