PEAK ORIGINAL EQUIPMENT TECHNOLOGY ANTIFREEZE + COOLANT for NORTH AMERICAN VEHICLES is a line of premium coolants specifically designed to match the technology and color requirements of North American vehicles. Each coolant is formulated with the same corrosion inhibitor technology that protected your vehicle straight from the factory. Color cues on the packaging and a list of covered vehicles on the front label make it easy to identify the right match for your specific vehicle. PEAK ORIGINAL EQUIPMENT TECHNOLOGY ANTIFREEZE + COOLANT for NORTH AMERICAN VEHICLES - PURPLE is an extended life antifreeze/coolant based on proprietary state-of-the-art organic acid technology (OAT). 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. This item contains a bittering agent called Denatonium Benzoate.