When To Add Engine Oil - Oldsmobile ALERO 2001 Owner's Manual

3400 V6 engine shown, 2.4L L4 engine similar

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
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 upper
mark that shows the proper operating range,
your engine could be damaged.
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