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Transfer Case and Front Axle
(Four-Wheel Drive) Inspection
Every 12 months or at engine oil change intervals,
check front axle and transfer case and add lubricant
when necessary. A fluid loss could indicate a problem;
check and have it repaired, if needed. On manual
shift transfer case, oil the control lever pivot point. Check
vent hose at transfer case for kinks and proper
installation. More frequent lubrication may be required
on off-road use.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
Part D: 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
(Diesel Engine)
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. To determine the preferred
viscosity for your vehicle’s diesel
engine, see Engine Oil on
page 5-16.
Engine Coolant
50/50 mixture of clean, drinkable
water and use only
DEX-COOL
®
Coolant. See Engine
Coolant on page 5-26.
Hydraulic Brake
System
Delco Supreme 11 Brake Fluid or
equivalent DOT-3 brake fluid.
6-20
Содержание 2003 DURAMAX
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