Mobiltrans™ AST 20

Mobil commercial-vehicle-lube , Kazakhstan

Extra High Performance Drivetrain Lubricant

Product Description

Mobiltrans™ AST 20 is a high performance multigrade transmission and drive train lubricant. This product is uniquely designed to provide low temperature and multi-season service in powershift transmissions, gearboxes, clutches, final drives and hydraulic systems. Mobiltrans AST 20 can be used in cold ambient temperatures down to -45ºC.


The technology in Mobiltrans AST 20 combines selected base oils and an advanced additive system to deliver the precise performance parameters needed to maximize the productivity of construction, logging, mining and agriculture equipment operating in severe conditions.


Features and Benefits

Today's technology has vastly improved the performance capabilities of heavy-duty off-highway equipment in terms of load, speed, control, reliability and performance through innovative drive train designs. These designs have increased the requirements of drive train fluids to deliver higher performance, increased productivity and reduced operating costs. Friction control, wear protection, thermal stability, shear stability, rust and corrosion protection and seal compatibility are features of the drive train fluid that must be optimally balanced to provide extended clutch, gear and synchronizer life, smooth shift control and high load capability over a wide range of applications and operating conditions. Mobiltrans AST 20 delivers exceptional performance in today's drive train components and hydraulic systems. The key benefits include:



Advantages and Potential Benefits



Excellent frictional properties

Optimum clutch friction retention & slippage control

Excellent anti-chatter brake performance

Extended clutch & brake life

Excellent load carrying, anti - wear and EP performance

Greater wear protection, extended component life, reduced cost of operation

Outstanding protection against deposit formation

Longer seal life, extended drain & service intervals

Protection from corrosion of copper and its alloys

Protects and extends the life of synchronizers

Compatible with clutch materials and elastomers

Long clutch component & seal life, reduced oil leakage

Excellent foam control protection

Optimum performance in wet brakes, hydraulic system

Multi-season capability

Extended drain and service intervals with lower operating costs and higher productivity

Excellent thermal and oxidation stability

Long oil life, reduced wear, extended equipment life

Exceptional shear stability

Maintains effective viscosity and film strength during severe operation

Outstanding low-temperature fluidity and pumpability

Reduced time from start-up to production, smoother shifting with quicker starts and reduced wear



Heavy duty transmissions, gear boxes, final drives and hydraulic systems used in off-highway construction, logging, mining and agriculture equipment


     •  Suitable for most mobile equipment hydraulic applications


Specifications and Approvals

This product is recommended for use in applications requiring:

Caterpillar TO-4


Properties and Specifications



SAE 0W-20

Pour Point, °C, ASTM D97


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


Density @ 15.6 C, g/ml, ASTM D4052


Brookfield Viscosity @ -40 C, mPa.s, ASTM D2983


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


Ash, Sulfated, mass%, ASTM D874


Cold-Cranking Simulator, Apparent Viscosity @ -35 C, mPa.s, ASTM D5293


Viscosity Index, ASTM D2270


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



Health and safety

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

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Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification.  Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations.  The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit
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