Phillips 66® Syncon Final Drive is a full-synthetic high-performance lubricant specially designed for use in the final drives and axles of Caterpillar off-highway equipment. It is formulated with advanced additive technology to provide improved gear and bearing life in final drives and axles. It meets the performance requirements of the Caterpillar FD-1 specification.

Syncon Final Drive provides significantly improved wear protection and oxidation control compared with Caterpillar TO-4 fluids, allowing extension of drain intervals under normal operating conditions. It may be used as a direct replacement for the Caterpillar FDAO fill fluid.

With the viscosity equivalent to what would be SAE 70 (ISO 320), Syncon Final Drive is recommended for use where SAE 60 is specified due to its very high viscosity index.

You are currently viewing SYNCON® FINAL DRIVE

Features & Benefits

  • Improved bearing life and gear life compared with TO-4 fluids
  • Excellent oxidation resistance and thermal stability for long fluid life
  • Protects against pitting, scuffing and wear
  • Protects against rust and copper corrosion
  • Compatible with a wide variety of seals
  • Good foam resistance


  • Syncon Final Drive is recommended for use in certain highly loader caterpillar final drives and axles that do not contain friction materials.

Technical Details

  • ISO Grade: 320
  • Licenses & Approvals

    Syncon Final Drive meets or exceeds the requirements of:#Caterpillar FD-1

    Note: Follow Caterpillar recommendations for preferred viscosity grade and ambient temperature ranges. At very low ambient temperatures, warm-up is required prior to equipment operation.

    Additional Details

    ISO Grade 320
    Specific Gravity @ 60°F 0.8842
    Density, lbs/gal @ 60°F 7.36
    Color, ASTM D1500 1
    Flash Point (COC), °C (°F) 254 (490)
    Pour Point, °C (°F) -45 (-49)
    Viscosity, Kinematic
    cSt @ 40°C 318
    cSt @ 100°C 38
    Viscosity Index 170
    cP @ -20° C 24,355
    cP @ -30° C 84,640
    High-Temp/High-Shear Viscosity, cP @ 150°C 9.55
    Copper Corrosion, ASTM D130 1a
    Sulfated Ash, ASTM D874, wt % 0.126
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