Oldsmobile 2003 Silhouette Owner's Manual page 322

Notice: Don't add too much oil. If your engine
has so much oil that the oil level gets above the
cross-hatched area that shows the proper operating
range, your engine could be damaged.
When to Add Engine Oil
If the oil is at or below the cross-hatched area at the tip
01
the dipstick, 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 to use. For engine oil crankcase capacity.
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The engine oil fill cap is
located behind the engine
oil dipstick. See Engine
Compartment Overview
on page 5- 72
for more
information on location.
Be sure to fill it enough to put the level somewhere in the
proper operating range in the cross-hatched area. Push
the dipstick all the way back in when you're through.
5-1 5