TO-4 Fluid - Transmission and Drive Train
Heavy duty off-highway
TO-4 Fluids are specifically formulated SAE 10, SAE 30 and 50 oils designed to meet Caterpillar’s latest Transmission and Drive Train Lubricant specifications. TO-4 supersedes and replaces Caterpillar TO-2 requirements. TO-4 provides improved clutch life when compared to the previous TO-2 Fluid, along with improved control of gear wear in SAE 30 for transmissions, gear boxes and SAE 50 for final drive trains. TO-4 has outstanding hydraulic oil stability and allows protection against high-pressure pump wear.
The recommended OEM drain interval and viscosity grade should always be followed for the specific machines oil compartments.
This product cannot be used as a THF/Wet brake oil in agriculture equipment. Ag-Master tractor hydraulic fluid is designed for this application.
Features & benefits
- Improved clutch life: Up to 45% over TO-2 fluids. Balanced static/dynamic friction provides clutch durability and maximum power transfer throughout the service interval giving greater equipment productivity.
- Wear protection: Outstanding shear stability, viscosity retention and increased film strength provides reduced wear on gears, bearings and clutches to give longer transmission life and less down time.
- High temperature protection: Provides excellent thermal, oxidation, sludge, corrosion, and deposit protection for increased transmission temperatures, severe service and extended oil life.
- Low temperature fluidity: Superior cold temperature flow characteristics ensures ease of pumping, reduced wear and good shifting capabilities, even at extremely low temperatures.
Excellent performance
- Heavy duty construction equipment
- Construction equipment dealers
- Construction equipment repair shops
- Road building, excavating, mining, and quarrying operations
Typical uses
- Construction
- Excavating
- Mining
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Typical specifications
SAE viscosity grade SAE 10W SAE 30 SAE 50 API gravity lbs/gal 29.4/7.32 27.8/7.40 27.1/7.43 Viscosity @ 40°C, cSt 39.7 96.4 212 Viscosity @ 100°C, cSt 6.4 11.5 18.4 Viscosity index 111 107 96 Pour point, °F (°C) -38 (-39) -22 (-30) -17 (-27) Flash point, COC, °F 410 450 460
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Recommended for
TO-4 fluid meets or exceeds performance requirements and can be used in applications where manufacturers recommend the use of TO-4/C-4 fluids:
Cat
TO-4*, TDTO™ 2005 Version (10W, 30, 50)
Allison
C-4 (10W, 30)
Komatsu
KES 07.868.1 (10W, 30, 50)
ZF
Power Shift TE-ML 07F(30),03C (10W, 30)
Spicer Clark-Hurth
Power Shift (10W, 30)
Dana
Power shift (10W, 30)
Euclid, Terex, Dresser
(10W, 30, 50)
Eaton/Fuller/Tremec/ TTC/Dana/Spicer
manual transmissions (30, 50)
Eaton/Vickers
M-2950S/35VQ25 Hyd (10W)
Ford
Type F construction applications (10W)
*Cat introduced TO-4 in 1991 making TO-2 obsolete