Phillips 66® Soluble Oil is a chlorine-free, water miscible metalworking fluid designed to emulsify easily and form a long-lasting, stable emulsion when mixed with water. It provides excellent cooling and lubricity for light-to medium-duty cutting and grinding of ferrous and non-ferrous metals, resulting in extended tool life and good surface finishes on the machined parts. It has been specially formulated to provide enhanced rust protection and greater emulsion stability when used with water qualities of varying hardness.

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Features & Benefits

  • Excellent cooling and lubricating properties
  • Helps extend cutting tool life
  • Reduces grinding wheel wear
  • Good surface finish
  • Emulsifies easily with water(1)
  • Forms a stable macro emulsion
  • Improved rust protection
  • Rejects tramp oils
  • Good antifoam properties
  • Suitable for both ferrous and non-ferrous metals

    (1)Note: When mixing, always add Soluble Oil to water; never add water to Soluble Oil. Typical concentrations (Soluble Oil in water) range from 3% to 10% for cutting operations and from 3% to 4% for grinding operations, depending on the type of metal and water hardness. Concentrations may be monitored with a refractometer.

    Caution: Containers of Soluble Oil should be stored indoors. They should not be stored at temperatures below 40°F (4°C) or above 130°F (54°C).


  • Light-to medium-duty machining operations, including broaching, drilling, grinding, milling, sawing, and tapping, with water hardness up to 500 ppm
  • Machine shops working with a wide variety of ferrous and non-ferrous metals

    Note: Soluble Oil does not contain a biocide. A biocide such as Bioban™ P-1487 or Bioban™ GK should be added in service to combat the growth of harmful microorganisms in machine sumps and reservoirs.

Technical Details

  • Specific Gravity @ 60°F: 0.919
  • Licenses & Approvals


    Additional Details

    Specific Gravity @ 60°F 0.919
    Density, lbs/gal @ 60°F 7.65
    Color, ASTM D1500 3.5
    Flash Point (COC), °C (°F) 184 (363)
    Pour Point, °C (°F) -43 (-45)
    cSt @ 40°C 34.2
    cSt @ 100°C 5
    SUS @ 100°F 178
    SUS @ 210°F 43.1
    Viscosity Index 51
    Emulsion Stability Good
    pH, 5% (1:20) dilution 10.3
    Rust Test, ASTM D665 A&B Pass
    Chlorine, wt % Nil
    Fatty Oil, wt % Nil
    Sulfur, Total, wt % 0.43
    Sulfur, Active, wt % Nil
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