Cadillac 2003 Seville Owner's Manual page 266

If the oil is at or below the cross-hatched area ai ihe tip
of 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, see Capacities and §pecifications on
page 5- 100.
The engine oil fi!! cap is
located behind the radiator
on the passenger's side
of the vehicle. For
more information on
location, see Engine
Compartment Overview on
page 5- 14.
Notice: Don't add too much oil. if your engine has
so much oil that the oil level gets above the
upper mark that shows the proper operating range,
your engine could be damaged.
Turn the cap counterclockwise to remove it.
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.
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