2010 Jeep Grand Cherokee Owner Manual SRT8 - Page 320

MAINTAINING YOUR VEHICLE 319 check the engine oil level is about five minutes after a fully warmed engine is shut off or before starting the engine after it has sat overnight. Checking the oil while the vehicle is on level ground will improve the accuracy of the oil level readings. Maintain the oil level in the "SAFE" range. Adding one quart of oil when the reading is at the bottom of the "SAFE" range will result in an oil level at the top of the "SAFE" range on these engines. NOTE: Fill engine oil one quart at a time. CAUTION! (Continued) • Operating the engine with the oil levels below the safe zone, or operating with oil levels that exceed the top of the safe zone may cause engine damage. Change Engine Oil The oil change indicator system will remind you that it is time to take your vehicle in for scheduled maintenance. Refer to "Maintenance Schedule" for further information. NOTE: Under no circumstances should oil change intervals exceed 6,000 miles (10 000 km) or six months, whichever occurs first. CAUTION! • Overfilling or underfilling will cause oil aeration or loss of oil pressure. This could damage your engine. Engine Oil Selection For best performance and maximum protection under all types of operating conditions, the manufacturer only (Continued) recommends full synthetic engine oils that meet the 7