Description
Mobil 1 Syn Gear Lube LS 75W-140 is a high performance, synthetic, multi-purpose, automotive gear lubricant designed to help meet the highest level performance requirements of many modern passenger vehicles in all types of operating conditions, from mild to severe, including limited slip applications, as well as deliver outstanding power transfer performance.
Compared to conventional hypoid gear lubricants, Mobil 1 Syn Gear Lube LS 75W-140 performs exceptionally over a wide range of temperatures. Mobil 1 Syn Gear Lube LS 75W-140 achieves this through a unique proprietary combination of synthetic base oils and a precisely balanced additive system that helps to deliver optimized viscosity-temperature properties together with the highest level of inherent formulation stability. It also helps to protect against thermal and oxidative degradation, wear and corrosion, viscosity loss associated with premature shearing.
Features and Benefits
Mobil 1 Syn Gear Lube LS 75W-140 combines wax-free synthesized hydrocarbon base oils and a specially designed extreme-pressure, limited-slip, sulfur-phosphorous additive system to help provide a significantly higher level of performance in rear axles and differentials versus conventional fluids. Greater film strength at higher operating temperatures, reduced fluid friction and significant advantages versus conventional mineral oil formulations. It helps to reduce wear and spalling under the high speed, high torque and high horsepower conditions in many sport utility vehicles, vans, light trucks, and cars. This unique, high technology final drive gear lubricant has demonstrated outstanding performance including long-term friction retention, excellent viscosity stability and improved differential/axle durability and cleanliness. Key features and potential benefits include:
| Features | Advantages and Potential Benefits |
| Exceptional thermal stability and resistance to high temperature oxidation | Helps to extend gear and bearing life due to minimal deposits
Long seal life Potential extended oil drain/service intervals |
| Outstanding protection against low speed/high torque wear and against high speed scoring | Capability to handle some of the severest driving conditions while delivering smooth efficient and reliable performance |
| Exceptional shear stability | Helps to retains viscosity and film strength under severe operating conditions to prevent wear |
| Excellent rust, staining and corrosion protection of copper and its alloys | Helps to reduce wear
Longer component life |
| Enhanced frictional properties | Helps to improved fuel economy and reduce operating costs |
| Outstanding low temperature fluidity versus mineral oils | Helps to reduce wear at start up and ease of start up even in arctic conditions |
| Good resistance to foaming | Helps to maintain film strength for reliable lubrication |
| Compatible with typical automotive seals and gaskets | Helps to minimize leakage and reduce contamination |
| Excellent limited-slip performance | Helps to reduce chatter and improve traction |
Applications
• Mobil 1 Syn Gear Lube LS 75W-140 is recommended for use in modernigh performance vehicles like sport utility vehicles, vans and light duty trucks requiring API GL-5 performance that require excellent durability
• Mobil 1 Syn Gear Lube LS 75W-140 is intended for initial fill, topping-off or refilling differentials, final drives, transfer cases and other gear applications where lubricants meeting API Service GL-5 and multi-purpose or mild EP gear lubricants are recommended
• Mobil 1 Syn Gear Lube LS 75W-140 can also be used in rear axles where API Service GL-4 lubricant is recommended
• Not recommended for automatic, manual or semiautomatic transmissions for which engine oil or automatic transmission fluids are recommended
• Recommended for many limited slip applications. For certain high level LS applications, additional limited slip additive may be required if axle chatter is observed.
Specifications and Approvals
| This product meets or exceeds the requirements of: |
| API GL-5 |
Properties and Specifications
| Property | |
| Grade | SAE 75W-140 |
| Density @ 15.6 C, g/cm3, ASTM D4052 | 0.872 |
| Flash Point, Cleveland Open Cup, °C, ASTM D92 | 207 |
| Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 | 24.4 |
| Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 | 170 |
| Pour Point, °C, ASTM D97 | -48 |
| Viscosity Index, ASTM D2270 | 175 |
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