Mobilube XFD 50

High Performance Drivetrain Lubricants

Mobilube™ XFD 50 and 60 are high performance drivetrain lubricants engineered specifically to provide optimum component life when used as recommended in Caterpillar final drives and axles. They are formulated from advanced base oils and the latest additive technology to protect bearings and gears from premature failure due to fatigue. These lubricants deliver excellent performance in heavy-duty commercial axles and final drives where extreme pressures and shock loading are expected. They provide exceptional chemical and thermal stability at elevated bulk oil temperatures generated under heavy loads and/or high ambient temperatures.

Mobilube XFD Series have been extensively field tested in Caterpillar off-highway heavy trucks and bulldozers over a wide range of ambient temperatures and operating in severe conditions with a recommended drain interval up to 4,000 hours for off-highway haulers.

Equipment lubricant recommendations

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Data sheets

Features and Benefits

Demands for higher productivity, more severe operating conditions, and larger capacity equipment put severe stress on axles and final drive components. In severe applications, TO-4 lubricants may be limited in terms of wear protection in heavily loaded final drives due to their need to also serve the frictional requirements of clutches in heavy-duty transmissions. For optimum durability and performance, Mobilube XFD gear lubricants can be relied on to maintain productivity and minimize maintenance costs between scheduled service intervals in extreme applications. The key benefits include:


FeaturesAdvantages and Potential Benefits
Improved extreme pressure (EP) performance versus TO-4 fluidsIncreased load and shock carrying ability with reduced premature failures and operating costs
High oxidation and thermal stabilityLonger oil life, reduced deposits, and extended component life
Excellent protection against copper corrosion and rustExtended component life and lower maintenance costs
Wide temperature capabilitySimplifies inventory and reduces need for seasonal change-outs
Good compatibility with seals and conventional drive train lubricantsReduces leakage and contamination from external sources
Eliminates or reduces foamingMaintains film strength for reliable wear protection


  • Heavy-duty axles and final drives used in trucks and bulldozers built by Caterpillar
  • Off-highway industries including: construction, mining, and quarrying
  • Use Mobilube XFD 50 when the maximum operating ambient temperature is below 32ºC (90ºF)
  • Use Mobilube XFD 60 when the maximum operating ambient temperature is below 50ºC (122ºF)
  • Not recommended for engines, transmissions or hydraulic systems
  • Not recommended for final drives and axles containing friction material and/or wet brakes

Specifications and Approvals

Mobilube XFD meets the following industry and builder specifications:5060
Caterpillar FD-1XX

Typical Properties

Mobilube XFD5060
SAE Grade5060
Viscosity, ASTM D 445  
      cSt @ 40ºC206334
      cSt @ 100ºC18.525.6
Viscosity Index, ASTM D 227099100
Pour Point, ºC, ASTM D 97-21-15
Flash Point, ºC, ASTM D 92250255
Density @ 15ºC kg/l, ASTM D 40520.8900.895


The products described on this data sheet are manufactured from high quality petroleum base stocks, carefully blended with selected additives. As with all petroleum products, good personal hygiene and careful handling should always be practiced. Avoid prolonged contact to skin, splashing into the eyes, ingestion or vapour inhalation. Please refer to the Material Safety Data Sheet for further information.

Note: The products described on this data sheet are NOT controlled under Canadian WHMIS legislation.