1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate. PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components DESIGNED FOR NORTH AMERICAN VEHICLES: Recommended for use with Ford, Chrysler, and GM vehicles that require an orange organic acid technology formula GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection of up to 150,000 miles or 5 years. CONCENTRATED FORMULA: Ideal for flushing, filling, or topping off your cooling system PEAK Original Equipment Technology Extended Life Orange Concentrate Engine Antifreeze + Coolant for North American Vehicles is a premium coolant specifically designed to match the technology and color requirements of your North American vehicle and is formulated with the same corrosion inhibitor technology that protected your vehicle straight from the factory. PEAK OET North American Orange Extended Life Antifreeze + Coolant formula is based on proprietary organic acid technology (OAT), and is specifically designed to provide protection of your vehicle’s engine cooling system metals, including aluminum, against damaging rust and corrosion. It is compatible with other orange OAT formulations and is perfect for flushing, filling, or topping off your cooling system. This item contains a bittering agent called Denatonium Benzoate. This 1 gallon bottle is recommended for use with North American cars and trucks requiring an orange OAT coolant formula, including Chrysler vehicles from 2013 & newer, Ford vehicles from 2011 -2019, GM vehicles from 1995 & newer and other North American vehicles requiring a orange coolant formulation. When installed as part of a complete flush and coolant fill, PEAK guarantees this coolant will provide service life protection of up to 150,000 miles or 5 years.