The Shell Extended Life Nitrate-Free Antifreeze/Coolant Pre-Diluted is the perfect solution for your cooling system needs. This Antifreeze is formulated with OAT technology, providing superior heat transfer and protection against cylinder liner pitting due to cavitation. It also provides excellent corrosion protection for all engine and cooling system metals, including aluminum, brass, copper, iron, solder and steel. No supplemental coolant additive use is needed during the life of the coolant, making it a cost-effective and convenient choice. FleetPride is your First Click in Heavy Duty®.