When To Add Engine Oil; What Kind Of Engine Oil To Use - Chevrolet 2004 Corvette Owner's Manual

When to Add Engine Oil

If the oil is below the cross-hatched area at the tip of the
dipstick, you will need to add at least one quart of oil.
But you must use the right kind. This section explains
what kind of oil to use. For engine oil crankcase capacity,
see Capacities and Specifications on page 5-99.
See "Racing or Other Competitive Driving" under
Starting Your Engine on page 2-21 for additional
information on engine oil.
Notice: Do not 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.
5-14
Be sure to add enough oil to put the level somewhere in
the proper operating range. Push the dipstick all the
way back in when you are through.

What Kind of Engine Oil to Use

Look for two things:
•
GM4718M
Your vehicle's engine requires a special oil meeting
GM Standard GM4718M. Oils meeting this
standard may be identified as synthetic. However,
not all synthetic oils will meet this GM standard.
You should look for and use only an oil that meets
GM Standard GM4718M.
Notice: If you use oils that do not have the
GM4718M Standard designation, you can cause
engine damage not covered by your warranty.
See Engine Compartment
Overview on page 5-12 for
the location of the
engine oil fill cap.