What Kind Of Engine Oil To Use - Chevrolet 2009 Corvette Owner's Manual

What Kind of Engine Oil to Use

Look for three things:
•
GM4718M
This 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.
Notice: Using oils that do not have the GM4718M
Standard designation can cause engine damage not
covered by the vehicle 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
This vehicle's engine was filled at the factory with a
®
Mobil 1 synthetic oil meeting all requirements for this
vehicle.
Substitute Engine Oil: When adding oil to maintain
engine oil level, oil meeting GM Standard GM4718M
might 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).
5-25