Product Description

Mobilube HD-A 85W-90 is a heavy duty gear lubricant formulated from high performance base oils and an advanced additive system. This lubricant is engineered for commercial transmissions, axles, and final drives where extreme pressures and shock loading are expected and is recommended by ExxonMobil for applications performance where API GL-5 service is required.

Features and Benefits

Today’s heavy equipment applications place higher performance demands on drive-train lubricants. Higher speeds, higher torque, and heavier loads require improved formulations to maximise equipment life and minimise operating costs. Longer service intervals place additional demands on the gear lubricant requiring effective basestock and additive systems. Mobilube HD-A 85W-90 gear lubricant is engineered to meet these challenges. The key benefits include:

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

Longer seal life

Good protection against low speed/high torque wear and against high speed scoring especially in heavily loaded rear axles Increased load carrying capability

Reduced maintenance costs and longer equipment life

Effective rust and corrosion protection Reduced wear and longer component life
Multipurpose capability Reduced number of gear lubricants required
Compatible with typical automotive seals and gaskets Minimum leakage and reduced contamination
Extended drain capability Increased productivity and reduced operating costs


Recommended by ExxonMobil for use in:

• Heavy duty automotive manual transmissions, axles, and final drives requiring API GL-5 level performance

• On highway cars and light trucks; heavy duty commercial vehicles

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

• Other gearboxes, steering gears and variable gearboxes

• Other heavy duty industrial and automotive applications involving hypoid gears operating under conditions where high speed/shock load, high speed/low torque, and/or low speed/high torque prevail

Specifications and Approvals

This product has the following approvals:
MB-Approval 235.0
This product is recommended for use in applications requiring:
MAN 342 Typ M1
This product meets or exceeds the requirements of:

Properties and Specifications

Grade SAE 85W-90
Density @ 15 C, kg/l, ASTM D4052 0.9
Flash Point, Cleveland Open Cup, °C, ASTM D92 222
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 17
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 184
Pour Point, °C, ASTM D97 -24
Viscosity Index, ASTM D2270 99

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.