2010 Jeep Grand Cherokee Owner's Manual - Page 383

382 MAINTAINING YOUR VEHICLE CAUTION! (Continued) • This vehicle has not been designed for use with Propylene Glycol-based engine coolant (antifreeze). Use of Propylene Glycol-based engine coolant (antifreeze) is not recommended. When adding engine coolant (antifreeze): • The manufacturer recommends using MOPAR Antifreeze/ Coolant 5-Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology) or equivalent. • Mix a minimum solution of 50% HOAT engine coolant (antifreeze) and distilled water. Use higher concentraAdding Coolant tions (not to exceed 70%) if temperatures below -34°F Your vehicle has been built with an improved engine (-37°C) are anticipated. coolant (antifreeze) that allows extended maintenance intervals. This engine coolant (antifreeze) can be used up • Use only high purity water such as distilled or deionized water when mixing the water/engine coolant to 5 Years or 102,000 miles (170 000 km) before replace(antifreeze) solution. The use of lower quality water ment. To prevent reducing this extended maintenance will reduce the amount of corrosion protection in the period, it is important that you use the same engine engine cooling system. coolant (antifreeze) throughout the life of your vehicle. Please review these recommendations for using Hybrid Please note that it is the owner's responsibility to mainOrganic Additive Technology (HOAT) engine coolant tain the proper level of protection against freezing ac(antifreeze). cording to the temperatures occurring in the area where the vehicle is operated.