GMC 2003 C4C042 Owner's Manual page 373

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 Engine oil with the American
(Gasoline Petroleum Institute Certified for
Engine) Gasoline Engines starburst symbol
of the proper viscosity. To
determine the preferred viscosity
for your vehicle's engine, see
"Engine Oil" in the Index.
Engine Oil See the Caterpillar
(Caterpillar Maintenance Manual for engine
Diesel Engine) oil recommendations.
USAGE
Engine Coolant
(Gasoline
Engine &
DURAMAX
Diesel)
Engine Coolant
(Caterpillar
Diesel Engine)
Hydraulic Brake
System
Windshield
Washer Solvent
R
Operation &
Clutch Bearing
Lubricant
FLUID/LUBRICANT
50/50 mixture of clean, drinkable
water and use only DEX
Coolant. See "Engine Coolant" in
t
the Index.
R
See the Caterpillar
Maintenance Manual for engine
coolant recommendations.
R
Delco Supreme 11
-
or equivalent DOT
R
GM Optikleen Washer Solvent
or equivalent.
Clutch Bearing Lubricant
(GM Part No. 12378484 or
equivalent NLGI #3 consistency).
R
-
COOL
Operation &
Brake Fluid
3 brake fluid.
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