2005 Dodge Durango Owner's Manual - Page 326

326 MAINTAINING YOUR VEHICLE Recommended Engine Coolant This vehicle has been factory filled with an Ethylene Glycol based engine coolant with long life corrosion inhibitors (called HOAT, for Hybrid Organic Additive Technology). Follow the "Maintenance Schedule" for the recommended coolant change intervals. Refer to Recommended Fluids, Lubricants and Genuine Parts for correct fluid type. CAUTION! • Mixing of coolants other than specified engine coolant, may result in engine damage, and decrease corrosion protection. If a non-HOAT coolant is introduced into the cooling system in an emergency, it should be replaced with the specified coolant as soon as possible. • Do not use plain water alone or alcohol base engine coolant (antifreeze) products. Do not use additional rust inhibitors or antirust products, as they may not be compatible with the radiator engine coolant and may plug the radiator. • This vehicle has not been designed for use with Propylene Glycol based coolants. Use of Propylene Glycol based coolants is not recommended.