Dodge 2006 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 dam-
age 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)