2006 Dodge Ram 1500 Pickup Owner's Manual - Page 432

432 MAINTAINING YOUR VEHICLE 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 one quart 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. Change Engine Oil CAUTION! Overfilling or underfilling the crankcase will cause oil aeration or loss of oil pressure. This could damage your engine. Road conditions as well as your kind of driving affect the interval at which your oil should be changed. Check the following to determine if any apply to you: • Day or night temperatures are below 32°F (0°C). • Stop and go driving. • Extensive engine idling. • Driving in dusty conditions • Short trips of less than 10 miles (16.2 km)