When To Add Engine Oil; What Kind Of Engine Oil To Use - Cadillac 2005 XLR Owner's Manual

When to Add Engine Oil

If the oil is at or below the cross-hatched area at the tip
of the dipstick, then 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 6-85.
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.
6-14
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 6-12 for
the location of the
engine oil fill cap.