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Mobil Centaur™ Moly Series

The Mobil Centaur™ Moly Series of greases are premium quality greases formulated with advanced calcium sulfonate thickener technology. The calcium sulfonate thickener in the Mobil Centaur Moly products represents a significant advance in grease formulation technology. Unlike conventional soap-base thickeners (i.e. lithium, aluminum, and calcium soaps), the calcium sulfonate thickener does much more than simply impart consistency. It imparts excellent corrosion and water-resistance properties to the grease and has inherent extreme-pressure protection properties that enhance load-carrying ability. Further, the EP properties derived from the calcium thickener also have inherently better thermal stability than those from conventional Sulphur/Phosphorus EP additives.

Features and Potential Benefits

The Mobil Centaur Moly greases are members of the Mobil™ brand of lubricating products recognized for their high quality and reliability, as well as performance capabilities. This family of products is manufactured to the strictest quality standards. A key feature for this product family is its reputation for reliability and consistency, and its ability to handle tough applications. The Mobil Centaur Moly Series are formulated with state-of-the-art high-performance calcium sulfonate thickener technology and is formulated for heavy-duty truck, mining and construction applications as well as heavily loaded industrial bearings. The Mobil Centaur Moly greases offer the following potential benefits:

  • Excellent extreme-pressure protection and load-carrying ability for equipment protection under heavy and shock loading
  • Fortified with 3% molybdenum disulphide for retention of EP performance and equipment protection in severe sliding situations
  • Outstanding corrosion and water resistance for highly reliable lubrication in hostile environments

The Mobil Centaur Moly Series of greases are highly recommended for heavily loaded applications or environments highly contaminated with water. Specific examples of such applications include:

  • Heavy-duty trucks, including chassis, spring shackles, king pins, tie rods, u-joints, hinge and bucket pins and fifth wheels
  • Mining and construction equipment
  • Marine equipment
  • Highly loaded industrial bearings
NLGI Grade12
Thickener TypeCalcium SulfonateCalcium Sulfonate
Color, VisualGreyGrey
Molybdenum DiSulfide, wt%, Calculated3%3%
Penetration, Worked, 25º C, ASTM D 217325265(min)
Dropping Point, º C, ASTM D 2265288280
Viscosity of Oil, ASTM D 445  
cSt @ 40º C,320320
Timken OK Load, ASTM D 2509, lb6060
ASTM D 2596, Weld Point, Kg500500
4-Ball Wear, ASTM D 2266, 40 kg, 1200 rpm, mm0.500.38
Water Washout, ASTM D 1264 1 hr. @ 79º C, %1.01.0
Water spray resistance, ASTM D 4049, mass %2520