Transmission Oil TO-4 SAE 40 – High-Temperature Protection for Heavy Equipment Drivetrains
Transmission Oil TO-4 SAE 40 from Greyhound Lubricants is a premium drive train lubricant engineered for Caterpillar, Komatsu, and other off-highway machinery that require the TO-4 performance specification.
It provides outstanding protection for power-shift transmissions, differentials, final drives, and wet-brake systems operating under high torque, heavy loads, and extreme temperature conditions.
The Greyhound Lubricants TO4 range (SAE 10W, 30, 40, 50 and 60) meets Caterpillar’s Transmission and Drive Train Lubricant (TDTO) requirements.
SAE40 is ideally suited for transmission and final-drive compartments where consistent friction performance, gear wear protection, and thermal stability are essential.
Formulated with high-quality mineral base oils and an advanced additive package, it delivers outstanding film strength, oxidation resistance, and long service life even in the toughest conditions.
Specifications: ISO VG 40; CAT TO-4; GL-3 / GL-4; Allison C-3 / C-4; KOMATSU KES 07.868.1; DANA; Vickers M-2950-S; EATON-Fuller; EUCLID; TREMEC / TTC.
- Superior wear protection: Exceptional load-carrying capacity protects heavily loaded gears and bearings.
- Thermal & oxidation stability: Resists sludge and varnish formation under severe heat and load.
- Optimised friction control: Ensures smooth clutch operation and quiet, efficient wet-brake performance.
- Extended oil & component life: Excellent shear stability reduces downtime and maintenance costs.
- Multipurpose versatility: Suitable for transmissions, final drives, and hydraulic assist systems in yellow-equipment fleets.
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