What is the recommended hydraulic fluid for Columbus jacks?

The following hydraulic oils are recommended for use in all ColumbusJACK/Regent products, though any oil compatible with Buna-N seals may be used. Proper oil level should be .5 to 1 inch below the fill port when all rams are collapsed.

  • Exxon/Mobil Aero HF (MIL-5606)
  • Exxon/Mobil DTE-11, -15
  • Phillips 66 X/C 5606
  • Royco 783 (Anderol) (MIL-PRF-6083) Shell Tellus 10, 15
  • Shell Aerofluid 31 (MIL-PRF-83282)
  • Shell Aerofluid 41 (MIL-PRF-5606)
  • Texaco Regal Oil R & O (32, 46, 100, 150, 220, 320, 460)

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