6-73
Cooling System Capacity
Model Quarts (Liters)
7.2L with manual transmission 32.0 (30.0). . . . . . . . .
7.2L with automatic transmission 30.0 (28.4). . . . . . .
8.1L with manual transmission 26.5 (25.0). . . . . . . . .
8.1L with automatic transmission
with sloped hood 24.5 (23.0). . . . . . . . . . . . . . . . . . .
8.1L with automatic transmission
with specialty hood 26.5 (25.0). . . . . . . . . . . . . . . . .
Above capacities (volumes) are approximate.
Crankcase Capacity
Capacities (volumes) shown are for normal refill. Add
oil as indicated when the oil filter element is changed.
Capacities given are approximate
-- keep level within
the operating range. Do not operate with fluid level
below the ADD line.
Engine
Capacity
-- Quarts (Liters)
7.2L** 21 (19.0)*
8.1L** 6.5 (6.1)
*Additional oil is required with auxiliary oil filter
systems. Make sure to add enough extra oil to fill the
auxiliary oil filter system. For vehicles equipped with
the LUBERFINER 750
-C, add 14 quarts (13.25 L).
** Check fill level on the oil indicator after initial fill
to make sure it is actually full. Oil level may vary
depending on vehicle option content.
Extending the recommended oil change interval requires
the use of an infrared oil analysis program which shows
the condition of the oil and its additives. For more
information, consult your GM Truck dealer, who is an
authorized Caterpillar
R
engine dealer.
Fuel Tank Capacity
Model U.S. Gallons (Liters)
Standard 50 (189.0). . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional 35 (132.5). . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional 60 (227.1). . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional* 70 (264.0). . . . . . . . . . . . . . . . . . . . . . . . . .
Optional** 100 (378.0). . . . . . . . . . . . . . . . . . . . . . . .
* Two 35
-gallon (132 L) tanks
**Two 50
-gallon (189 L) tanks
Above capacities (volumes) are approximate.
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