What Kind Of Engine Oil To Use - Cadillac CTS 2008 Owner's Manual

What Kind of Engine Oil to Use

Look for three 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.
Use only an oil that meets GM Standard GM4718M.
5-18
Notice: If you use oils that do not have the
GM4718M Standard designation, you can cause
engine damage not covered by your warranty.
•
SAE 5W-30
SAE 5W-30 is best for the vehicle. These numbers
on an oil container show its viscosity, or thickness.
Do not use other viscosity oils such as SAE 20W-50.
•
American Petroleum Institute (API) starburst symbol
Your vehicle's engine is filled at the factory with a
®
Mobil 1 synthetic oil, which meets all requirements for
your vehicle.
Substitute Engine Oil: When adding oil to maintain
engine oil level, oil meeting GM Standard GM4718M
may not be available. You can add substitute oil
designated SAE 5W-30 with the starburst symbol at all
temperatures. Substitute oil not meeting GM Standard
GM4718M should not be used for an oil change.
Oils meeting these
requirements should have
the starburst symbol on the
container. This symbol
indicates that the oil has
been certified by the
American Petroleum
Institute (API).