Chevrolet 2002 Astro, Owner'S Manual, Page: 273 / 400

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When to Add Engine Oil
If the oil is at or below the ADD line, 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
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.
The engine oil fill cap is located on the valve cover in
the engine compartment on the passenger’s side of the
vehicle. Your vehicle may have a cap with text and a
graphic or just a graphic as shown above. See “Engine
Compartment Overview” in the Index for more
information on location.
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.