K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Engine Oil: Technical Service Bulletins
Diesel Engine - Correct Oil Viscosity & Oil Filter Usage
File In Section: 06 - Engine/Propulsion System
Bulletin No.: 00-06-01-025A
Date: September, 2001
INFORMATION
Subject:
Correct Oil Viscosity and Oil Filter Usage for the Duramax 6600 Diesel Engine (RPO LB7)
Models:
2001-2002 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 Models with 6.6L Engine (VIN 1 - RPO LB7)
This bulletin is being revised to add the AC Delco oil filter part number and add the 2002 Model Year. Please discard Corporate Bulletin Number
00-06-01-025 (Section 06 - Engine/Propulsion System).
Important:
The Duramax 6600 diesel engine can produce oil pressures over 690 kPa (100 psi) during a cold start condition and the oil pressure gauge may
remain near 552 kPa (80 psi) while driving. Because of these oil pressures, it is important that the correct oil filter is used and torqued properly and
the proper oil viscosity is used for the ambient temperatures.
Oil Filter
The correct oil filter for use on the Duramax 6600 engine is the AC PF2232 or the production oil filter, GM P/N 97214983. This filter was designed
specifically for use on the Duramax 6600 engine and incorporates improved filtering capabilities as well as an integral oil pressure relief valve. The oil
filter should be torqued to 24 N.m (18 lb ft) to prevent leaks under high pressure conditions.
Oil Viscosity for Cold Weather Operation
SAE 5W-40 viscosity oil designated as API CH-4 or CG-4 should be used if the ambient temperature falls below -18°C (0°F) to prevent excessive oil
pressure on a cold start. Refer to the Owner's Manual diesel supplement for additional information on proper oil usage for other operating conditions.
Parts Information
Parts are currently available from GMSPO.
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