Phillips 66® Soluble Oil HD is a chlorinated, heavy-duty metalworking fluid designed to emulsify easily and form a stable emulsion when mixed with water. It provides excellent cooling and lubricity for medium-to heavy-duty cutting and grinding of ferrous and non-ferrous metals, resulting in extended tool life and good surface finishes on the machined parts.

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Features & Benefits

  • Excellent cooling and lubricating properties
  • Excellent anti-wear and anti-weld properties
  • Helps extend cutting tool life
  • Good surface finish
  • Emulsifies easily with water
  • Forms a stable emulsion
  • Good rust protection
  • Good antifoam properties


  • Soluble Oil HD is recommended for medium-to heavy-duty machining operations with water hardness up to 300 ppm. Typical applications include:
  • Broaching
  • Deep hole drilling (gun drilling)
  • Gear hobbing and gear shaping
  • Grinding
  • Milling
  • Reaming
  • Sawing
  • Tapping

Technical Details

  • ISO Grade: 46
  • Licenses & Approvals


    Additional Details

    ISO Grade 46
    Specific Gravity @ 60°F 0.958
    Density, lbs/gal @ 60°F 7.98
    Color, Visual Blue-Green
    Flash Point (COC), °C (°F) 177 (351)
    Pour Point, °C (°F) -20 (-4)
    cSt @ 40°C 43.5
    cSt @ 100°C 6.1
    SUS @ 100°F 225
    SUS @ 210°F 46.7
    Viscosity Index 79
    Emulsion Stability Good
    Foam Test, ASTM D892 Pass
    pH, 5% (1:20) dilution 9.6
    Rust Test, ASTM D665 A&B Pass
    Chlorine, wt % 2.2
    Fatty Oil, wt % 3.3
    Sulfur, Total, wt % Nil
    Sulfur, Active, wt % Nil
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