1998 Oldsmobile Silhouette Owner's Manual - Page 322

Checking Engine Oil Pull outthe dipstick and clean itwith a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level. NOTICE: Don't add too much oil. your engine hasso If much oil that the oil level gets above the cross-hatched area that shows the proper operating range, your engine could be damaged. The engineoil fill cap is located just behind the engine oildipstick. When to Add Engine Oil If the oil is at or below the ADD mark, then you'll need to add at least one quart of oil. But you must use the right kind. This part explains what kind of oil touse. For crankcase capacity, see "Capacities and Specifications" in the Index. Be sure to fill it enough to put the level somewhere in the proper operating range. Push the dipstick all the way back in when you're through. 6-12