Buick PARKAVENUE 1994 Manual page 241

It's a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
To Check Engine Oil
The engine oil dipstick is
directly behind the engine
fan.
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.
When to Add Oil
If the oil is at or below the ADD line, then you'll need to
add some oil. But you must use the right kind. This section
explains what kind of oil to use. For crankcase capacity,
see "Capacities and Specifications" in the Index.
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.
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
lower, and check the
level.
Just 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.
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