Transmission Oil TO-4 SAE 30 – Transmissions & Hydraulic Systems for Yellow Equipment
Greyhound Lubricants Transmission Oil TO-4 SAE 30 is a premium drive-train and hydraulic fluid developed for Caterpillar, Komatsu and other off-highway machinery operating under the TO-4 performance specification.
It provides outstanding protection for power-shift transmissions, direct drives, wet brakes, hydraulic systems and gear trains used in heavy construction and earth-moving equipment.
The TO4 range (SAE 10W, 30, 50 and 60) meets Caterpillar’s latest Transmission and Drive Train Lubricant requirements.
SAE 30 is recommended for transmission and hydraulic compartments where precise friction control, smooth clutch engagement and durable wear protection are required.
Formulated with high-purity base oils and a robust additive system, it delivers long-term oxidation resistance, shear stability and consistent performance in high-load and elevated-temperature conditions.
Specifications: ISO VG 30; CAT TO-4; GL-3 / 4; Allison C-3 / C-4; KOMATSU KES 07.868.1; DANA; Vickers M-2950-S; EATON-Fuller; EUCLID; TREMEC / TTC.
- Improved clutch performance: Optimised static and dynamic friction ensures smooth shifts and extended clutch plate life.
- Enhanced wear protection: Excellent film strength and shear stability reduce gear and bearing wear under heavy loads.
- Superior oxidation resistance: Prevents sludge and deposit formation for longer oil and component life.
- High-temperature stability: Maintains viscosity and lubrication at elevated transmission temperatures.
- Hydraulic efficiency: Provides quick response and smooth operation of hydraulic controls and power shift systems.
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