Mobil Delvac 1™ Gear Oil 75W-90

Bottle of Mobil Delvac 1™ Gear Oil

Mobil Delvac 1 Gear Oil 75W-90 is a fully synthetic drivetrain lubricant engineered to meet very demanding extended drain and warranty requirements. This gear oil is designed for use in heavy-duty drivetrains that require gear lubricants with excellent load-carrying capability and where extreme pressures and shock loading are expected.

Mobil Delvac 1 Gear Oil 75W-90 incorporates synthetic base stocks and advanced additives, providing significant advantages over conventional gear oils. The state-of-the-art technology in Mobil Delvac 1 Gear Oil 75W-90 delivers excellent performance, helps to protect against thermal degradation and oxidation, and contributes to reduced wear and corrosion, improved shear stability and extended service capability.

This oil can be used for on-highway light- and heavy-duty trucks, buses and vans. Other applications include off-highway industries, such as construction, mining, quarrying and agriculture.

Important: This oil is not recommended for applications requiring API GL-4 level performance. They are not intended for automatic, manual or semiautomatic transmissions for which engine oil or automatic transmission fluids are recommended.

Please refer to the owner’s handbook for the OEM application requirements for your vehicle or equipment.

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Features and Benefits

Today's technology has vastly improved the performance capabilities of heavy-duty on and off-highway equipment load, torque, speed, and control through innovative drivetrain designs. These designs have changed and increased the requirements of lubricants to deliver this higher level of performance, increase productivity, and reduce operating costs. For heavy-duty final drives, friction control, wear protection, thermal stability, shear stability, rust and corrosion prevention, and seal protection are features that must be optimally balanced to contribute to extended gear and seal life, smooth operation, improved fuel economy potential and high load high torque capability over a wide range of applications.


The key benefits of Mobil Delvac 1 Gear Oil 75W-90 include:



Advantages and Potential Benefits

Exceptional thermal stability and resistance to high temperature oxidation

Long 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.

Helps to reduce maintenance costs and long equipment life

Exceptional shear stability

Helps to retain viscosity and film strength under severe operating conditions to prevent wear

Enhanced friction reduction properties

Has potential for fuel economy and reduce operating costs

Outstanding low temperature fluidity versus conventional oils

Helps to Reduce wear and ease of start-up

Good resistance to foaming

Helps to maintain film strength for reliable lubrication

Compatible with typical automotive seals and gaskets

Minimum leakage and reduced contamination



     •  Heavy duty non-synchronized manual transmissions, axles and finalrives requiring API GL-5 and MT-1 performance

     •  On-highway light and heavy duty trucks, busses 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 1 Gear Oil 75W-90 is intended for initial fill, topping-off or refilling differentials, final drives and transfer cases

     •  Recommended for equipment such as winch reduction gears and crawler vehicle propulsion gear drives that are exposed to severe low temperatures

     •  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


Specifications and Approvals

This product has the following approvals:

Dana SHAES 256 Rev C

Dana SHAES 429

Detroit Fluids Specification 93K219.01

HYUNDAI DYMOS P110SS AXLE - Low Floor Rear Axle

Mack GO-J Plus

MAN 342 Typ M2

MB-Approval 235.8

Navistar, Inc. MPAPS B-6821

SAE J2360

Voith Turbo 132.00374401

Voith Turbo 132.00374402

VOLVO 97312








Siemens Traction Gears GmbH (former Flender Rail) T7302

Meritor O-95 


This product is recommended for use in applications requiring:

Eaton PS-163



This product meets or exceeds the requirements of:



R. Bosch AS TE-ML 08

ISUZU Axle Oil

ISUZU Large Manual Transmission Oil

ISUZU LCV Front Axle Oil

Meritor O-76-N


Properties and Specifications




SAE 75W-90

Density @ 15.6 C, kg/l, ASTM D4052


Flash Point, Cleveland Open Cup, °C, ASTM D92


Kinematic Viscosity @ 100 C, mm2/s, ASTM D445


Kinematic Viscosity @ 40 C, mm2/s, ASTM D445


Pour Point, °C, ASTM D97


Viscosity Index, ASTM D2270



Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @

Lubricant gallons in workshop

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