10W-30 STOU tractor oil for engine, transmission, hydraulics and wet brakes with a universal all-season profile for agricultural machinery.
10W-30 STOU tractor oil is a classic multi-functional oil for agricultural machinery designed to supply multiple systems with a single, well-balanced product. It is suitable for engine, transmission, hydraulics, wet brakes and clutch, making it ideal for operations looking to reduce product variety in daily use.
Especially in tractors and work machines with changing operating profiles between field, yard and road, a well-matched STOU offers clear advantages. 10W-30 STOU tractor oil combines strong cold-start properties with stable viscosity performance for year-round use under real agricultural conditions.
Unlike specialized single-purpose oils, the focus here is on universal usability. This saves service time, simplifies oil inventory management and reduces the risk of using the wrong product during demanding operations.
Suitable for engines, transmissions, hydraulic systems and wet brakes in tractors, yard and municipal machinery where the specified STOU standards or comparable approvals are required. Particularly useful for mixed fleets with many universal applications.
What does STOU mean in 10W-30 STOU tractor oil?
STOU stands for Super Tractor Oil Universal and describes a multifunctional oil that combines engine, transmission, hydraulic and wet brake requirements.
Why is 10W-30 so common in tractors?
Because this viscosity offers a good balance of cold-start performance, hydraulic behavior and load stability for many agricultural applications.
Can 10W-30 STOU replace a separate engine oil?
Yes, but only in machines where the manufacturer explicitly approves this STOU concept. Specialized engines and modern applications may require different products.
| Property | Method | Unit | Value |
|---|---|---|---|
| Density at 15 °C | ASTM D-7042 | g/ml | 0.862 |
| Kinematic viscosity KV 100 | ASTM D-7042 | mm²/s | 12,1 |
| Kinematic viscosity KV 40 | ASTM D-7042 | mm²/s | 79 |
| Viscosity index | ASTM D-7042 | - | 148 |
| Flash point | ASTM D-92/DIN EN ISO 2592 | °C | 236 |
| Pour point | ASTM D-97/DIN EN ISO 3016 | °C | -32 |
| CCS | ASTM D-5293 | cP @ °C | 6000 @ -25 |
| Total base number | DIN 51639-1 | mgKOH/g | 10,1 |
All types of containers should preferably be stored under cover. If stored outdoors without protection, containers should be kept lying down to prevent water ingress and preserve label readability. Products should not be stored above 60 °C. Protect from direct sunlight and frost.
