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Part C: Recommended Fluids and
Lubricants
Fluids and lubricants identified below by name, part
number, or specification can be obtained from your
dealer/retailer.
Usage
Engine oils with the letters CJ-4 are
required for your vehicle. The CJ-4
designation can appear either alone
or in combination with other
American Petroleum Institute (API)
Engine Oil
designations, such as API CJ-4/SL.
These letters show API levels of
quality. To determine the preferred
viscosity for your vehicle's diesel
engine, see Engine Oil on
page 5-16.
50/50 mixture of clean, drinkable
water and use only DEX-COOL
Engine Coolant
Coolant. See Engine Coolant on
page 5-25.
Hydraulic Brake
Delco
System
equivalent DOT-3 brake fluid.
Fluid/Lubricant
®
Supreme 11 Brake Fluid or
Usage
Windshield
Washer Solvent Optikleen
Exhaust Brake
Ball Joint Cap
Lubricant
Power Steering
System
Automatic
Transmission
Manual
Transmission
Hydraulic
Clutch System
®
Key Lock
Cylinders
Fluid/Lubricant
®
Washer Solvent.
High-Temperature Grease
(GM Part No. U.S. 1051344, in
Canada 903037) or NLGI #3
consistency.
®
DEXRON
-VI Automatic
Transmission Fluid.
See the Allison Transmission
Operator's Manual for correct
transmission fluid.
Synthetic Manual Transmission Fluid
(GM Part No. U.S. 88861952, in
Canada 88861953).
Hydraulic Clutch Fluid
(GM Part No. U.S. 12345347, in
Canada 10953571) or equivalent
DOT-3 brake fluid.
Multi-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
®
6-27
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