2010 Jeep Liberty Owner's Manual - Page 433

432 MAINTAINING YOUR VEHICLE CAUTION! (Continued) • Your vehicle has been built with improved fluids that protect the performance and durability of your vehicle and also allow extended maintenance intervals. Do not use chemical flushes in these components as the chemicals can damage your engine, transmission, power steering or air conditioning. Such damage is not covered by the New Vehicle Limited Warranty. If a flush is needed because of component malfunction, use only the specified fluid for the flushing procedure. Engine Oil Checking the oil while the vehicle is on level ground will improve the accuracy of the oil level readings. Always maintain the oil level within the SAFE zone on the dipstick. Adding 1 quart (0.9 L) of oil when the reading is at the bottom of the SAFE zone will result in a reading at the top of the safe zone on these engines. CAUTION! Overfilling or underfilling the crankcase will cause aeration or loss of oil pressure. This could damage your engine. Change Engine Oil The oil change indicator system will remind you that it is Checking Oil Level To assure proper engine lubrication, the engine oil must time to take your vehicle in for scheduled maintenance. be maintained at the correct level. Check the oil level at Refer to "Maintenance Schedule" for further information. regular intervals, such as every fuel stop. The best time to check the engine oil level is about five minutes after a fully warmed up engine is shut off.