Caterpillar TO-4 Fluid for Off-Highway Equipment

Kendall® Powershift Transmission Fluid is a high-performance multifunctional fluid developed for use in transmissions, final drives and hydraulic systems of off-highway equipment where a fluid meeting Caterpillar TO-4 performance requirements is specified. It provides substantially improved friction and antiwear performance compared with older API CD/TO-2 quality fluids, resulting in longer equipment life and reduced risk of field failure. The SAE 10W and 30 viscosity grades also are recommended for use in Allison off-highway heavy-duty automatic transmissions where a C-4 quality fluid is specified.

Features & Benefits

  • Well-balanced frictional properties for efficient clutch operation and improved wet brake performance
  • Excellent oxidation resistance and thermal stability for long fluid life
  • High load-carrying capacity for protection of final drive gear sets
  • Excellent deposit control and wear protection
  • Protects yellow metals against corrosion
  • High shear stability
  • Compatible with a wide variety of seals and friction materials
  • Good low-temperature properties
  • Good foam resistance


  • Powershift transmissions, hydrostatic transmissions, torque converters, final drives and hydraulic systems of Caterpillar, Euclid, Komatsu and other off- highway construction and mining equipment
  • Heavy-duty automatic transmissions where the OEM specifies an Allison C-4 quality fluid
  • Heavy-duty manual and semi-automatic transmissions in trucks and buses where the OEM specifies a Caterpillar TO-4 quality fluid or a heavy-duty engine oil

Note: Typically, the SAE 10W and 30 viscosity grades are recommended for hydraulic systems and transmissions, and the SAE 50 viscosity grade is recommended for differentials, final drives and heavy-duty manual transmissions. Refer to the OEM recommendations for selection of the proper viscosity grade.

Technical Details


Licenses & Approvals

Powershift Transmission Fluid SAE 30 is OEM-approved for service fill in the following applications:

  • Allison TES-439, for off-highway applications (approval no. 439- 33422013)

Powershift Transmission Fluid meets or exceeds the requirements of:

  • Caterpillar TO-4
  • Vickers (Eaton) M-2950-S

Powershift Transmission Fluid is recommended for service fill in:

  • ZF torque converter transmissions in off-highway equipment where the OEM specifies a TE-ML 03C quality lubricant (SAE 10W, 30)

Additional Details

Grade 10W 30 50
Density, lbs/gal @ 60°F 7.29 7.36 7.42
Color, ASTM D1500 2.5 3 4
Flash Point (COC), °C (°F) 213 (415) 233 (451) 242 (468)
Pour Point, °C (°F) -39 (-38) -33 (-27) -28 (-18)
Viscosity, Brookfeld
cP @ -35°C 45500 --- ---
Viscosity, Kinematic
cSt @ 40°C 44 98 227
cSt @ 100°C 6.6 11.1 19.1
Viscosity Index 101 98 95
Total Base Number, ASTM D2896 7.6 7.6 7.6
Zinc, wt % 0.11 0.11 0.11