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 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. The two lighter 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 Series Mobiltac LL Mobiltac MM Mobiltac QQ
Viscosity, ASTM D 445
cSt @ 40º C 1209 3900 9526
cSt @ 100º C - - 217
Flash Point, ºC, ASTM D 92 182 182 190


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