1998 Oldsmobile Achieva Owner's Manual - Page 241

3100 Engine The engine oil dipstick handle is yellow. The dipstick for the 3 100 engine is located in frontof the engine, behind the fan. Turn off the engineand give the oil a few minutes to drain back into the oil pan. you don't, the oil dipstick If might not show the actual level. When to Add Engine Oil If the oil is at or below the ADD line, then you'll need to add at least onequart of oil. But you must use the right kind. This part explains what kind of oil to use. For crankcase capacity, see "Capacitiesand Specifications'' in the Index. Checking Engine Oil Pull outthe dipstick and clean it with a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tipdown, and checkthe level. 6-13