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Oil Filter, Engine > < Engine - GM dexos 1 and dexos 2(R) Oil Specifications|Page 1326
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Engine Oil: Capacity Specifications

Heavy Duty Models

CAPACITY, Refill:                                           
6-cyl. 4.3L...........................................................................................................................................................................................3.8 Liters    4.0 Quarts
8-cyl. 5.7L...........................................................................................................................................................................................3.8 Liters    4.0 Quarts
8-cyl. 7.4L: 1988-90............................................................................................................................................................................4.8 Liters    5.0 Quarts
8-cyl. 7.4L: 1991-92............................................................................................................................................................................5.8 Liters    6.0 Quarts

Type.....................................................................................................................................................................................................................................SG
Capacity shown is without filter.  When replacing filter, additional oil may be added
Above 40°F (4°C)...............................................................................................................................................................................................................30‡

Above 0°F (-18°C).....................................................................................................................................................................................................10W-30*
Below 60°F (16°C)........................................................................................................................................................................................................5W-30
*Preferred
‡May be used when other recommended viscosities are unavailable

Light Duty Models

Type.....................................................................................................................................................................................................................................SG
CAPACITY, Refill:

7.4L 4V ex. 1988 V30/35....................................................................................................................................................................5.7 Liters    6.0 Quarts
7.4L Others 1988-90...........................................................................................................................................................................4.8 Liters    5.0 Quarts
7.4L 1991............................................................................................................................................................................................5.7 Liters    6.0 Quarts
All others.............................................................................................................................................................................................3.8 Liters    4.0 Quarts
Capacity shown is without filter.  When replacing filter, additional oil may be needed
7.4L:
Above 40°F (4°C).............................................................................................................................................................................................................30**
Above 0°F (-18°C).....................................................................................................................................................................................................10W-30*
Below 60°F (16°C)........................................................................................................................................................................................................5W-30
Others:
Above 40°F (4°C).............................................................................................................................................................................................................30**
Above 0°F (-18°C).......................................................................................................................................................................................................10W-30
All temperatures...........................................................................................................................................................................................................5W-30*
*Preferred
**May be used only when other recommended viscosities are not available

Oil Filter, Engine > < Engine - GM dexos 1 and dexos 2(R) Oil Specifications|Page 1326