The Radiator Specialties Liquid Anti-Rust with Water Pump Lube is the perfect solution for keeping your cooling system running efficiently. This powerful formula prevents evaporation, formation of rust and corrosion and lubricates and protects all metal parts, hoses and seals. It helps to keep the entire cooling system clean and running efficiently, ensuring that your vehicle runs smoothly and efficiently. FleetPride is your First Click in Heavy Duty®.