With Expertise Built In™, the OTR Heavy Duty Hybrid Antifreeze/Coolant 50/50 Premix features a superior quality global Hybrid Organic Acid Technology (HOAT) virgin ethylene glycol-based fluid that is specially made with industry-leading additives to provide supreme performance. This heavy duty antifreeze/coolant has a blend of molybdate and nitrite additives to offer top-of-the-line wet sleeve liner cavitation defense. FleetPride is your First Click in Heavy Duty®.