Product Description

Mobilube GX 80W-90, 140 are high performance, heavy duty gear lubricants formulated from high quality base oils and an advanced additive system.  These lubricants are engineered for automotive heavy-duty transmissions, axles, and final drives where protection against wear and scoring is required. They are recommended by ExxonMobil for use in applications  where API GL-4 service is required.

Features and Benefits

Today’s heavy equipment applications place higher performance demands on drivetrain lubricants.  Higher speeds, higher torque, and heavier loads require improved formulations to maximise equipment life and optimise operating costs.  Longer service intervals place additional demands on the gear lubricant requiring effective basestock and additive systems.  Mobilube GX 80W-90, 140 is engineered to meet these challenges.  The key benefits include:

Features Advantages and Potential Benefits
Good thermal stability and resistance to high temperature oxidation Extended gear and bearing life due to minimal deposits

Longer seal life

Excellent rust and corrosion protection Longer component life
Good low temperature lubrication Reduced wear at start-up and ease of start-up
Compatible with typical seals and gaskets Minimum leakage and reduced contamination


Recommended by ExxonMobil for use in:

•  Heavy duty manual transmissions, axles and final drives requiring API GL-4 level performance

•  Passenger cars, on highway light and heavy duty trucks, and commercial vehicles

•  Off highway industries including: construction, mining, quarrying, and agriculture

•  Other heavy duty industrial and automotive applications including hypoid gears operating under moderate to severe conditions

Specifications and Approvals

Mobilube GX Series are also recommended by ExxonMobil for use in applications requiring: 140 80W-90
This product is recommended for use in applications requiring: 140 80W-90

Properties and Specifications

Property 140 80W-90
Grade SAE 140 SAE 80W-90
Density @ 15.6 C, g/ml, ASTM D4052 0.91 0.89
Flash Point, Cleveland Open Cup, °C, ASTM D92 260 240
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 30.0 14.5
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 447 135
Pour Point, °C, ASTM D97 -6 -33
Viscosity Index, ASTM D2270 95 104

Health and Safety

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


It cannot be guaranteed that the product information given above is up to date. For the latest version of the Product Data Sheet we refer to the product library of ExxonMobil.