1997 Pontiac Grand Prix Owner's Manual - Page 284

Checking Engine Oil Pull out the dipstick and clean it with a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level. When to Add Oil If the oil is at or below the lower mark, then you'll need to add some oil. But you must use the right kind. This part explains whatkind of oil to use, For crankcase capacity, see "Capacities and Specifications" the Index. in I NOTICE: Don't add too much oil. your engine has so If much oil that the oil level above the gets cross-hatched area that shows the proper operating range, your engine could damaged. be 3100 Engine 3100 Engine