Universal Tractor Engine, Transmission & Hydraulic Oil 10W-40 (STOU) for Agricultural Equipment

Universal Tractor Engine, Transmission & Hydraulic Oil 10W-40 (STOU) for Agricultural Equipment

Universal Tractor Engine, Transmission & Hydraulic Oil 10W-40 (STOU) for Agricultural Equipment

Mineral 10W-40 Super Tractor Oil Universal for engines, transmissions, hydraulics and wet brakes in agricultural machinery, offering high detergency, EP performance, oxidation resistance and reliable all-season protection.

Key Highlights

Mineral STOU · 10W-40 Viscosity · Engine, Transmission, Hydraulic & Wet Brake Use · High Detergency & Dispersancy · Rust & Corrosion Protection · Excellent EP & Anti-Wear Properties · All-Season Agricultural Performance

YEFE Styx STOU 10W-40 is a mineral Super Tractor Oil Universal (STOU) formulated for use in the engine, transmission, oil-immersed wet brakes and hydraulic systems of tractors, combines, harvesters and other agricultural and off-road equipment with or without turbocharged engines. Its universal characteristic allows one lubricant to serve multiple systems, offering clear maintenance advantages, reducing the risk of using the wrong oil and helping to limit the number of products that need to be kept in stock. The balanced additive package provides a high level of detergency and dispersancy to keep engines and gearboxes clean, while protecting components against rust and corrosion in demanding farm environments. The oil delivers excellent Extreme Pressure (EP) performance for heavily loaded gear sets, strong resistance against oxidation and very good wear protection for engines, transmissions, hydraulics and wet brake assemblies under severe operating conditions. YEFE Styx STOU 10W-40 can be used all year round, supporting good cold-start behavior, reducing friction and helping keep engines clean while allowing optimum drain intervals where manufacturers permit. The product is not applicable for diesel engines equipped with Diesel Particulate Filters (DPF), where specialised low-SAPS engine oils are required. The Styx STOU family is also available in SAE 10W-30, 15W-30 and 15W-40 grades to match different climate and equipment requirements.

Packaging & Branding Support

YEFE offers affordable and adaptable customization solutions based on the package solutions and branding presentation that distributors and brand owners can introduce lubricant products easily and in a professional manner.

We plan to offer our customization services as a way of minimizing time-to-market with no compromise in the quality of the products and supply reliability.

Engine oil packaging size options including bottles, drums, and bulk oil

Packaging Size Options

Engine oil packaging size options including bottles, drums, and bulk oil

To facilitate its presence in the market through various sales channels, YEFE has several sizes of its packaging. The customers have the freedom to use appropriate bottle, drum or bulk oil forms depending on the retail strategy, the scale of distribution as well as the logistics needs.

The packaging is in the form of small retail jars, medium sized containers, large drums and bulk oil supply in workshops or industrial customer use. The combination of the packaging sizes will be manipulated based on the volume of orders and positioning in the market.

Packaging Size Options

To facilitate its presence in the market through various sales channels, YEFE has several sizes of its packaging. The customers have the freedom to use appropriate bottle, drum or bulk oil forms depending on the retail strategy, the scale of distribution as well as the logistics needs.

The packaging is in the form of small retail jars, medium sized containers, large drums and bulk oil supply in workshops or industrial customer use. The combination of the packaging sizes will be manipulated based on the volume of orders and positioning in the market.

Engine oil bottle design drawing showing dimensions and structure Custom 4L engine oil bottle with private label packaging by YEFE

YEFE Styx STOU 10W-40 provides:

  • Universal mineral STOU formulation for tractor and agricultural machinery, suitable for engine, transmission, hydraulic and oil-immersed wet brake applications, helping simplify lubricant selection and inventory.
  • High level of detergency and dispersancy to maintain engine and transmission cleanliness, reducing sludge and deposit formation during heavy field work.
  • Excellent protection from rust and corrosion to safeguard internal components exposed to moisture, contaminants and varying operating conditions.
  • Excellent Extreme Pressure (EP) properties to protect gears, final drives and other heavily loaded transmission parts in agricultural equipment.
  • Excellent resistance against oxidation to help preserve oil stability, viscosity and performance over the recommended drain interval.
  • Very good protection against wear for engines, gear sets, hydraulic pumps and wet brakes across a wide range of temperatures and loads.
  • All-year usability with stable lubrication film and good cold-start capabilities for tractors and off-road machinery operating in diverse climates.

Typical specifications and performance levels:

  • Engine applications: ACEA E3; API CG-4/CF-4/CE; API SF; MB 228.1.
  • Transmission applications: Allison C-4; API GL-4; Case MS 1206/1207/1209; Caterpillar TO-2; CNH MAT 3525/3505; Ford M2C159B/C, M2C86B/C, M2C134D; John Deere J20C/J20D, J27; MF M1145/1144/1143; MF M1139/1135; NH 030C/024C/410B/420A; NH 82009201/82009202/82009203; ZF TE-ML 06B/06C/06R/07B.
  • Hydraulic applications: Danfoss; Eaton M-2950S; Eaton I-280-S.
  • SAE viscosity grade: 10W-40 (other Styx STOU grades available separately in 10W-30, 15W-30 and 15W-40).

Note: Not applicable in diesel engines equipped with Diesel Particulate Filters (DPF) that require low-SAPS engine oils.

Application Category Recommended Use
Equipment Type Tractors, harvesters, combines and off-road agricultural equipment with or without turbocharged engines where a universal STOU 10W-40 is specified for engine, transmission and hydraulic systems.
System Coverage Engines, manual transmissions, final drives, hydraulic circuits and oil-immersed wet brakes in farm and construction machinery requiring multi-functional Super Tractor Oil Universal.
Primary Segment Agricultural oils for mixed-use lubrication across multiple systems in tractors and related equipment, reducing the need for separate engine, gear and hydraulic oils.
Usage Type Daily farm operations, field cultivation, harvesting and transport tasks, including frequent stop-and-go driving and heavy pulling under variable load conditions.
Operating Conditions All-season operation with cold starts, continuous PTO work, heavy draft operations and extended use in dusty, muddy or humid agricultural environments.
Key Function Provide universal lubrication, minimise friction and wear, maintain cleanliness, protect against rust and corrosion and ensure smooth performance of hydraulic and wet brake systems.
Specification Requirement Equipment requiring ACEA E3 and API CG-4/CF-4/CE/SF engine performance combined with API GL-4 and listed OEM transmission and hydraulic specifications for tractors and agricultural machinery.
Target Users Farmers, agricultural contractors, machinery fleets and service workshops seeking one 10W-40 STOU product to simplify maintenance and stock management.
Available Packaging 4L, 5L, 20L and 205L packs suitable for retail sale, workshop use and bulk distribution to agricultural fleets and equipment dealers.

About YEFE | Manufacturer Behind the Product

YEFE (Shenzhen) Lubricating Oil Co., Ltd. is a professional lubricant manufacturer and global supplier based in Guangdong, China. We specialize in the formulation, blending, filling, and private label production of automotive and industrial lubricants.

With automated production lines, standardized operating procedures, and full-process quality traceability, YEFE delivers stable and consistent lubricant products to distributors, importers, and brand owners across South America, Southeast Asia, the Middle East, and Africa.

Every product is supported by laboratory testing and controlled manufacturing processes to ensure viscosity accuracy, oxidation stability, and long-term performance reliability.

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Automated blending & filling production lines

Full SAE grades & API standards coverage

In-house quality testing & batch traceability

OEM / ODM support from formula to packaging

Export experience across emerging markets

Frequently Asked Questions

MOQ depends on the product type, packaging size, and customization requirements. YEFE offers flexible MOQs to support market testing, regional launches, and long-term supply programs. Please contact us with your target packaging and market to receive a tailored quotation.

Yes. YEFE provides multiple packaging size options, including small retail bottles, medium containers, large drums, and bulk oil supply. Packaging size combinations can be adjusted based on your sales channel and logistics needs.

Yes. YEFE offers free bottle design and brand packaging design support for OEM and private label customers. This includes label layout and packaging appearance to help ensure a professional, market-ready presentation.

Production lead time varies depending on order volume, packaging selection, and customization requirements. Standard orders typically require several weeks for production. Exact lead time will be confirmed after order details are finalized.

Yes. YEFE provides complete export-ready documentation, including TDS, MSDS, COA, and other required shipping documents. We support international shipments to multiple global markets.

All YEFE products are manufactured using standardized production processes and automated blending systems. Each batch undergoes laboratory testing and quality verification to ensure consistent performance and stable supply.

Yes. YEFE supports trial or initial orders to help customers evaluate product quality, packaging suitability, and market response before scaling up.

You can contact YEFE through the website inquiry form or by email. Our team will assist you with product selection, packaging options, quotation, and order confirmation.

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