Imagine a heavy-duty truck struggling to climb a steep slope in harsh mining conditions, carrying tons of ore. The transmission system endures tremendous pressure and shock loads. With inadequate gear oil performance, this could lead to gear wear, overheating, or even failure, resulting in costly downtime. The solution for reliable operation and extended transmission system lifespan in extreme conditions may lie in Mobil Delvac 1™ Gear Oil 80W-140.

Mobil Delvac 1™ Gear Oil 80W-140 is a fully synthetic heavy-duty axle lubricant specifically designed to meet demanding drain intervals and warranty requirements. Engineered for applications requiring exceptional load-carrying capacity and frequently subjected to extreme pressure and shock loads, this gear oil utilizes synthetic base stocks and advanced additive technology to deliver superior performance compared to conventional gear oils.

Core Advantages of Mobil Delvac 1™ Gear Oil 80W-140: Comprehensive Performance Enhancement

The exceptional performance of Mobil Delvac 1™ Gear Oil 80W-140 stems from its unique formulation and advanced technology, delivering outstanding results in several key areas:

Thermal Stability and High-Temperature Oxidation Resistance

Gear oils are prone to oxidation and degradation at high temperatures, leading to viscosity changes, deposit formation, and reduced lubrication effectiveness. Mobil Delvac 1™ Gear Oil 80W-140 utilizes premium synthetic base oils and antioxidant additives to effectively inhibit oxidation, maintain stable performance, extend drain intervals, and minimize deposit formation—thereby prolonging gear and bearing service life.

Exceptional Low-Speed/High-Torque Wear Protection and High-Speed Scuffing Resistance

Under heavy loads, gears endure significant pressure and shock loads, making them susceptible to low-speed/high-torque wear and high-speed scuffing. Mobil Delvac 1™ Gear Oil 80W-140 contains advanced extreme pressure additives that form durable protective films on gear surfaces, preventing metal-to-metal contact and reducing wear and scuffing while enhancing load-carrying capacity.

Superior Shear Stability

Gear oils can experience viscosity breakdown under high shear stress, leading to reduced oil film thickness and lubrication effectiveness. Mobil Delvac 1™ Gear Oil 80W-140 maintains excellent viscosity and film strength under severe operating conditions, preventing wear and ensuring reliable lubrication.

Outstanding Rust, Contamination, and Corrosion Protection

The advanced additive package in Mobil Delvac 1™ Gear Oil 80W-140 provides effective protection against rust, contamination, and corrosion, extending component service life.

Enhanced Friction Reduction

The friction-reducing technology in Mobil Delvac 1™ Gear Oil 80W-140 lowers the coefficient of friction, improving transmission efficiency and fuel economy while reducing operating costs.

Excellent Low-Temperature Fluidity

Maintaining proper fluidity in cold environments, this gear oil ensures quick starts and effective lubrication even in extreme winter conditions, minimizing wear.

Compatibility with Automotive Seals and Gaskets

The formulation is compatible with typical automotive seals and gaskets, minimizing leaks and contamination while maintaining transmission system cleanliness and reliability.

Application Scope: Broad Compatibility

• Heavy-duty manual transmissions, axles, and final drives requiring API GL-5 and MT-1 performance
• On-highway light and heavy trucks, buses, and vans operating in diverse conditions
• Off-highway applications in construction, mining, quarrying, and agriculture
• Other heavy industrial gear drives operating under high-speed/impact loads or low-speed/high-torque conditions
• Differentials, final drives, transfer cases, and other gear applications requiring MIL-PRF-2105E or API GL-5 specifications
• Equipment exposed to extreme cold, such as winch reduction gears and tracked vehicle propulsion systems
• Applications requiring extended drain intervals and warranty compliance

Specifications and Approvals: Quality Assurance

Mobil Delvac 1™ Gear Oil 80W-140 has earned numerous OEM approvals and meets or exceeds the following specifications:

• Dana SHAES 429
• Mack GO-J
• Navistar MPAPS B-6821
• SAE J2360
• ZF TE-ML series approvals
• Meritor O-95

It is also recommended for applications requiring:

• Dana SHAES 256 Rev A
• MIL-PRF-2105E

The product meets or exceeds API GL-5 and API MT-1 service requirements.

Important Application Limitations

Mobil Delvac 1™ Gear Oil 80W-140 is not suitable for applications requiring API GL-4 performance or where engine oil or automatic transmission fluid is specified for automatic, manual, or semi-automatic transmissions.

Performance Data: Demonstrated Value

• Extended drain intervals: Typically 2-3 times longer than conventional mineral oils
• Reduced wear: Demonstrated gear wear reduction exceeding 50%
• Improved fuel economy: Potential 1-2% fuel savings in certain applications
• Lower maintenance costs: Overall maintenance cost reduction of 10-20%

Conclusion

Mobil Delvac 1™ Gear Oil 80W-140 represents a premium synthetic solution for heavy-duty driveline applications, delivering comprehensive protection and performance enhancement. Its advanced formulation addresses the challenges of extreme operating conditions while optimizing equipment longevity and operational efficiency. For equipment operators facing demanding environments, this gear oil provides a reliable solution to maximize uptime and minimize total cost of ownership.