What Kind Of Engine Oil To Use - Chevrolet Kodiak 2006 Owner's Manual

What Kind of Engine Oil to Use

Look for these two things:
•
CI-4 or CH-4
Oils designated as API CI-4 or CH-4 are
recommended for your vehicle. The CI-4 or CH-4
designations may appear either alone, together, or
in combination with other API designations, such
as API CI-4/SL.
These letters show American Petroleum Institute
(API) levels of quality.
Notice: Use only engine oils that have one of these
designations CI-4 or CH-4 for the DURAMAX
diesel engine. Failure to use the recommended oils
can result in engine damage not covered by your
warranty.
5-26
®