Buick REGAL 1997 Manual page 288

The engine oil dipstick handle is the yellow loop near
the front of the engine.
Turn off the engine and give the oil a few minutes to
drain back into the oil pan. If you don't, the oil dipstick
might not show the actual level.
Checking Engine Qil
Pull out
the dipstiik and clean it with
a
paper
tuwel or
cloth, then push
it
back iri 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 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 to use. For
crankcase capacity, see "Capacities and Specifications"
in the Index.
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