Part C: Recommended Fluids and
Lubricants
Fluids and lubricants identified below by name,
part number, or specification may be obtained
from your dealer.
Usage Fluid/Lubricant
Engine Oil
(Gasoline
Engine)
Engine oil which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certified for Gasoline Engines
starburst symbol. GM Goodwrench
®
oil meets all the requirements for
your vehicle. To determine the
proper viscosity for your vehicle’s
engine, see “Engine Oil” in the
Index.
Usage Fluid/Lubricant
Engine Oil
(DURAMAX
®
/
Isuzu Diesel
Engines)
Engine oil with the letters CJ-4 or
CI-4 is best for your vehicle. The
CJ-4 or CI-4 designation may
appear either alone or in
combination with other API
designations, such as API CJ-4/SM.
These letters show American
Petroleum Institute levels of quality.
To determine the preferred viscosity
for your vehicle’s diesel engine,
see “Engine Oil” in the Index.
Engine Oil
(Caterpillar
®
Diesel Engine)
See the Caterpillar
®
Operation &
Maintenance Manual for engine oil
recommendations.
Engine Coolant
(Caterpillar
®
Diesel Engine)
See the Caterpillar
®
Operation &
Maintenance Manual for engine
coolant recommendations.
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