1-GAL. EXTENDED LIFE PURPLE PREDILUTED ANTIFREEZE/COOLANT: Long-lasting antifreeze/coolant based on proprietary state-of-the-art organic acid technology (OAT) and is already prediluted to make topping off your cooling system a breeze UP TO 15 YEARS/350,000 MILES GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection of up to 350,000 miles or 5 years OPTIMAL ENGINE PROTECTION: Each extended life coolant is formulated with the same corrosion inhibitor technology that protected your vehicle straight from the factory, preventing rust and corrosion to protect all cooling system components 50/50 PREDILUTED FORMULA: Already prediluted to make cooling system top offs easy to perform for North American vehicles requiring a purple OAT coolant FOR MODERN, HIGH PERFORMANCE NORTH AMERICAN VEHICLES: Ethylene glycol-based formula represents a carefully balanced mixture of organic acid corrosion inhibitors for complete protection of modern high-performance North American vehicle engines in newer Alfa Romeo, Chrysler, Dodge, Fiat, Jeep, and RAM vehicles This item contains a bittering agent called Denatonium Benzoate. Keep your engine running smoother, longer, and cooler with the PEAK OET Extended Life Purple 50/50 Prediluted Antifreeze and Coolant. This premium engine coolant is an extended life antifreeze/coolant based on proprietary state-of-the-art organic acid technology (OAT) and is already prediluted to make topping off your cooling system a breeze. When installed as part of a complete flush and fill, PEAK guarantees this engine coolant will provide service life protection of up to 350,000 miles or 15 years. Each extended life coolant is formulated with the same corrosion inhibitor technology that protected your vehicle straight from the factory, preventing rust and corrosion to protect all cooling system components. The ethylene glycol-based formula represents a carefully balanced mixture of organic acid corrosion inhibitors for complete protection of modern high-performance North American vehicle engines. It can be mixed with any purple colored Organic Acid Technology (OAT) coolant in newer Alfa Romeo, Chrysler, Dodge, Fiat, Jeep, and RAM vehicles, as well as with antifreeze/coolant in vehicles requiring a purple colored OAT coolant. This product’s purple color distinguishes its unique chemistry and ensures easy selection for North American vehicles requiring this type and color of coolant.