Mobiltac Double Letter Series

Mobil industrial , Egypt

Gear Oils

Product Description

The Mobiltac Double Letter Series products are high performance, non-diluent type, heavy-bodied products intended for the lubrication of open gears over a wide range of environmental conditions and machine requirements. They incorporate extreme pressure additives for the protection of gear teeth and metal surfaces subject to extremely heavy loads. They form a cohesive and adhesive lubricating film that resists wear, water wash and excessive "throw off". They lubricate properly under boundary conditions. They resist peeling or flaking at sub-zero temperatures.

Mobiltac Double Letter Series lubricants are recommended for all-purpose applications in open gears. These two grades meet many builder requirements for heavily loaded splash-type enclosed gearing.

Features and Benefits

The Mobiltac Double letter Series of products are important members of the Mobiltac brand of products that have been used with great success over several decades in a wide variety of applications. They offer the following features and potential benefits:

  • Reduced maintenance costs because of longer gear life resulting from reduced wear and excellent protection against corrosion
  • Reduced lubricant consumption due to excellent adhesive qualities and resistance to "throw off" and water wash-out
  • Good low temperature properties with resistance to peeling


Mobiltac Double Letter Series lubricants are recommended for all-purpose applications in open gears. These two grades are used in heavily loaded splash-type enclosed gearing. Applications include:

  • Machinery components as hoist gears, swing gears, large press gears
  • Equipment in forge shops, pit or strip mining
  • Large earthmoving equipment and cement kilns

Typical Properties

Mobiltac Double Letter SeriesMobiltac LLMobiltac MM
Viscosity, ASTM D 445  
cSt @ 40ºC10503900
cSt @ 100ºC4689
Flash Point, ºC, ASTM D 92182182
Density @ 15ºC, ASTM D 4052, kl/l0.9540.969

Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.

The Mobil logotype, the Pegasus design and Mobiltac are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.


ExxonMobil Egypt (S.A.E.)
1097 Cornish El-Nil, Garden City, Cairo, Egypt

You can always contact our Technical Help Desk engineers on Mobil lubricants and services related questions:

+ 20 2 795 4850/60

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 
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.