Cooling System

• Engine Torque below 660 lb ft (LYA, LYB, LYC)

31.8 liters

33.6 quarts

• Engine Torque above 835 lb ft (LYD, LQF)

33.1 liters

35.0 quarts

Engine Oil with Filter

22.5 liters

23.8 quarts

¹Additional 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).

Fuel Tank

• Standard (Single)

189.3 liters

50.0 gallons

• Optional (Single)¹

189.3 liters

50.0 gallons

• Optional (Dual)²

283.9 liters

75.0 gallons

• Optional (Dual)³

378.5 liters

100.0 gallons

¹Single 50 gallon (189 L) tanks. Not applicable to 4x2 vehicles with 128 inch or 140 inch wheelbases and not applicable to 6x4 vehicles with a 152 inch wheelbase.

²One 25 gallon (94.6 L) tank and one 50 gallon (189.2 L) tank. Available only on 4x2 vehicles with 128 inch or 140 inch wheelbases or 6x4 vehicles with a 152 inch wheelbase.

³Two 50 gallon (189 L) tanks. Not applicable to 4x2 vehicles with 128 inch or 140 inch wheelbases and not applicable to 6x4 vehicles with a 152 inch wheelbase.

Rear Axle - Single Speed

• 15040S

10.0 liters

21.0 pints

• 19060S (HPK); 21060S (HPP)

14.7 liters

31.0 pints

• 23090S (HPT)

20.1 liters

42.5 pints

• 26105S (HPA)

24.1 liters

51.0 pints

• S110 (HD2)

7.1 liters

15.0 pints

Rear Axle - Tandem

• DS404 (front) (HPE); RS404 (rear)

15.1 liters

32.0 pints

Rear Axle - Two-Speed

• 19060T (HPL); 21060T (H15)

18.0 liters

38.0 pints

• 23080T (H25)

20.8 liters

44.0 pints

Transmission Fluid, Automatic

• 2200 Series; 2350 Series, 2500 Series, 2550 Series

19.0 liters*

40.0 pints*

• MD 3000; MD 3500 with PTO Provision

28.1 liters

59.8 pints

• MD 3000; MD 3500 without PTO Provision

24.6 liters

52.0 pints

*Add 2 pints (1 L) when changing spin-on or remote filter.

See the Allison Automatic Transmission Operator's Manual for fluid check and maintenance information.

Transmission Fluid, Manual

• FS5406; FS6406

9.2 liters

19.5 pints

• RT8709B

12.3 liters

26.0 pints

• RT8908LL

13.2 liters

28.0 pints

All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck the fluid level after filling.