Features & Potential Benefits

Features Advantages & Potential Benefits
Exceptional thermal stability and resistance to high-temperature oxidation Extended gear and bearing life due to minimal deposits
Long seal life
Outstanding protection against low-speed/high-torque wear and high-speed scoring Increased load-carrying capability
Reduced maintenance costs and longer equipment life
Exceptional shear stability Retains viscosity and film strength under severe operating conditions to prevent wear
Excellent rust, staining, and corrosion protection of copper and its alloys Reduced wear and longer component life
Outstanding low-temperature fluidity versus mineral oils Reduced wear and ease of start-up
Good resistance to foaming Maintains film strength for reliable lubrication
Compatible with typical automotive seals and gaskets Minimum leakage and reduced contamination


  • Heavy-duty manual transmissions, axles and final drives requiring API GL-5 and MT-1 performance
  • On-highway light and heavy-duty trucks, buses and vans
  • Off-highway industries including: construction, mining, quarrying, and agriculture
  • Other heavy-duty industrial gear drives including hypoid and worm gears operating under conditions where high-speed/shock load, high-speed/low-torque, and/or low-speed/high-torque conditions prevail
  • Mobil Delvac Synthetic Gear Oil 75W-90 is intended for initial fill, topping-off or refilling differentials, final drives, transfer cases and other gear applications where lubricants meeting MIL-PRF-2105E, API Service GL-5, EP gear lubricants are recommended
  • Recommended for equipment such as winch reduction gears and crawler vehicle propulsion gear drives that are exposed to severe low temperatures
  • Use as a companion with Mobil Delvac Synthetic Transmission Fluid 50 in transmissions for maximum drive train life, efficiency and fuel economy improvement
  • Recommended where extended service intervals and warranties are required
  • Not recommended for applications requiring API GL-4 Level performance
  • Not intended for automatic, manual or semiautomatic transmissions for which engine oil or automatic transmission fluids are recommended


Mobil Delvac Synthetic Gear Oil meets the following industry and builder specifications:
SAE J2360
Scania STO 1:0

Mobil Delvac Synthetic Gear Oil has the following builder approvals:
Dana SHAES 429
Eaton Roadranger E500TM SHAES 256 Rev. C
Mack GO-J Plus
ArvinMeritor 0-76N
MB-Approval 235.8
International TMS-6816

Mobil Delvac Synthetic Gear Oil has the following military quality level: