2009 Jeep Compass Owner Manual - Page 363

MAINTAINING YOUR VEHICLE 361 When adding engine coolant (antifreeze), a minimum solution of 50% recommended MOPAR௡ Antifreeze/ Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology), or equivalent, in water should be used. Use higher concentrations (not to exceed 70%) if temperatures below Ϫ34°F (Ϫ37°C) are anticipated. Use only high purity water such as distilled or deionized water when mixing the water/engine coolant (antifreeze) solution. The use of lower quality water will reduce the amount of corrosion protection in the engine cooling system. Please note that it is the owner's responsibility to maintain the proper level of protection against freezing according to the temperatures occurring in the area where the vehicle is operated. NOTE: Mixing engine coolant (antifreeze) types will decrease the life of the engine coolant (antifreeze) and will require more frequent coolant changes. Cooling System Pressure Cap The cap must be fully tightened to prevent loss of engine coolant (antifreeze) and to ensure that engine coolant (antifreeze) will return to the radiator from the coolant recovery bottle. The cap should be inspected and cleaned if there is any accumulation of foreign material on the sealing surfaces. 7