1993 Cadillac DeVille Owner's Manual - Page 281

ENGINE OIL It's a good idea to check your engine oil every time you get fuel.In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. Turn off the engine and give the oil a few minutes to drain back into the oil pan. If you don't, the oil dipstick might not show the actual level. L ' * and clean with a it paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip lower. I ,