Phillips 66® Special Compressor Oil is a high-quality, detergent compressor oil specifically developed for the lubrication of centrifugal and rotary gas compressors handling sour gas or process gas. It has a high alkaline reserve to neutralize the acids formed during compression of sour gas or process gas, and holds moisture in suspension until oil drain.

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Features & Benefits

  • Excellent oxidation resistance and thermal stability at high temperatures
  • High alkaline reserve to neutralize acids formed during gas compression
  • Holds moisture in suspension
  • Protects against rust and corrosion
  • Good foam resistance
  • Low carbon-forming tendency


  • Centrifugal and rotary gas compressors handling sour gas or process gas
  • Process gas compressors
  • Vacuum pumps

Technical Details

  • ISO Grade: 68
  • Licenses & Approvals


    Additional Details

    ISO Grade 68
    Specific Gravity @ 60°F 0.875
    Density, lbs/gal @ 60°F 7.29
    Color, ASTM D1500 6.5
    Flash Point (COC), °C (°F) 238 (460)
    Pour Point, °C (°F) -15 (5)
    cSt @ 40°C 66.3
    cSt @ 100°C 8.9
    SUS @ 100°F 343
    SUS @ 210°F 56.2
    Viscosity Index 108
    Acid Number, ASTM D974, mg KOH/g 1.3
    Foam Test, ASTM D892, Seq. I, mL 0/0
    Oxidation Stability, RPVOT, ASTM D2272, minutes 247
    Rust Test, ASTM D665 A&B Pass
    Sulfated Ash, ASTM D874, wt % 1.27
    Total Base Number (TBN), ASTM D2896, mg KOH/g 9.9
    Calcium, wt % 0.32
    Zinc, wt % <0.001
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