GMC 2006 DURAMAX - Recommended Fluids and Lubricants

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 oils with the letters CI-4 or
CH-4 are best for your vehicle.
The CI-4 or CH-4 designation
may appear either alone, or in
combination with other API
designations, such as API CI-4/SL.
These letters show American
Petroleum Institute (API) levels of
quality. GM Goodwrench
®
oil meets
all the requirements for your vehicle.
To determine the preferred viscosity
for your vehicle’s diesel engine, see
Engine Oil on page 5-21.
Engine Coolant
50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. See Engine Coolant on
page 5-34.
Hydraulic Brake
System
Delco
®
Supreme 11 Brake Fluid or
equivalent DOT-3 brake fluid.
Usage Fluid/Lubricant
Windshield
Washer
GM Optikleen
®
Washer Solvent.
Van Models:
Parking Brake
Cable Guides
Chassis Lubricant
(GM Part No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Pickup Models:
Hydraulic
Clutch System
(5-Speed
Trans.)
Hydraulic Clutch Fluid
(GM Part No. U.S. 12345347, in
Canada 10953517) or equivalent
DOT-3 brake fluid.
Pickup Models:
Hydraulic
Clutch System
(6-Speed
Trans.)
Hydraulic Clutch Fluid. Use only
GM Part No. U.S. 88958860, in
Canada 88901244, Super DOT-4
brake fluid.
Power Steering
System
GM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Pickup Models:
Manual
Transmission
(5-Speed
with Low Gear,
RPO MW3)
GM Goodwrench
®
Synthetic
Manual Transmission Fluid
(GM Part No. U.S. 12346190, in
Canada 10953477) or equivalent
SAE 75W-85 GL-4 gear oil.
6-15