Approximate Fluid Capacities

See Fluid and Lubricant Recommendations for more information. All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level after filling.

Application	Specifications
Application	Metric	US English
Axle Capacities
Front Axle 1000 Series (8.25")	1.43 liters	1.51 quarts
Front Axle 2000 Series (9.25")	1.8 liters	1.9 quarts
Rear Axle 1000 Series without RPO AXN (8.6")	2.03 liters	2.15 quarts
Rear Axle 1000 Series with RPO AXN (9.5" LD)	2.45 liters	2.59 quarts
Rear Axle 2000 Series (9.5" HD)	2.6 liters	2.75 quarts
Rear Axle 2000 Series with RPO LY6 (10.5" )	2.6 liters	2.75 quarts
Rear Axle 2000 Series with RPO LMM (11.5")	3.0 liters	3.17 quarts
Rear Axle 3000 Series (11.5")	3.0 liters	3.17 quarts
Cooling System
4.3L V6 (LV1, LV3)	15.6 liters	16.5 quarts
5.3L V8 (L83)	16.0 liters	16.9 quarts
6.0L V8 (LC8)	15.4 liters	16.3 quarts
6.0L V8 (L96) Without Oil Cooler	15.4 liters	16.3 quarts
6.0L V8 (L96) With Oil Cooler	16.3 liters	17.2 quarts
6.2L V8 (L86)	16.0 liters	16.9 quarts
6.6L 90 Degree V8 (LML)	25.1liters	26.5 quarts
Engine Oil with Filter
4.3L V6 (LV1, LV3)	5.7 liters	6.0 quarts
4.8L V8, 5.3L V8, 6.0L V8, and 6.2L V8 (L9H, L20, LMG,L96, LC8, LC9)	5.68 liters	6.0 quarts
5.3L V8, 6.2L V8 (L83, L86)	7.6 liters	8.0 quarts
6.6L 90 Degree V8 (LMM)	9.5 liters	10 quarts
Fuel Tank
1500 Series Standard and Short Box	98.4 liters	26.0 gallons
1500 Series Long Box	128.7 liters	34.0 gallons
2500 Series Standard Box	136.3 liters	36.0 gallons
2500 and 3500 Series Long Box	136.3 liters	36.0 gallons
3500 Series Chassis Cab	240.4 liters	63.5 gallons
3500 Series Chassis Cab - Front Tank	89.0 liters	23.5 gallons
3500 Series Chassis Cab - Rear Tank (if equipped)	151.4 liters	40.0 gallons
Diesel Exhaust Fluid (DEF) Tank	20.1 liters	5.3 gallons
Automatic Transmission Fluid - 8L90
Overhaul	10.3 liters	10.88 quarts
Complete Trans System	10.8 liters	11.41 quarts
Automatic Transmission Fluid - 6L80-E/6L90-E
Pan Removal and Filter Replacement - Approximate Capacity 6L80/6L90	5.7 liters	6.0 quarts
Overhaul - Approximate Capacity 6L80/6L90	9.9 liters	10.5 quarts
Complete Trans System - Approximate Capacity 6L80	11.5 liters	12.2 quarts
Complete Trans System (Heavy Duty Cooling) - Approximate Capacity 6L80/6L90	11.7 liters	12.4 quarts
Automatic Transmission Fluid - Allison
Initial Fill	12 liters	12.7 quarts
Refill	7.0 liters	7.4 quarts
Automatic Transmission Fluid - 2ML70
Drain Plug Only - Approximate Capacity	9.93 liters	10.5 quarts
Drop Pan and Filter - Approximate Capacity	10.9 liters	11.5 quarts
Dry Transmission (Empty) - Approximate Capacity	12.30 liters	13 quarts
Manual Transmission (Drain and Refill)
Tremec 5 Speed MQ7	3.5 liters	3.7 quarts
Tremec 5 Speed M2P	4.4 liters	4.6 quarts
Transfer Case Fluid	1.5 liters	1.6 quarts
Hydraulic Brake System	1.0 liters	2.11 pints
Refrigerant
Refrigerant (R-134a)	0.6 kg	1.4 lbs
PAG Oil (R-134a)	180 ml	6.09 oz