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Hydraulic brake systems in aviation are used with two different fluids:

  • Hydraulic fluid to Spec MIL-H5606, based on mineral oil,
  •  brake fluid DOT4, based on polyglycol.

Both fluids may not be mixed or interchanged, as the sealings in the hydraulic system would be affected and destroyed.
Please always refer to the indications in the Maintenance Manual of your aircraft.


P/N Description Packing
058221 Hydraulic oil 100 ml
059940 Mineral Fluid 1 qt/946 ml
059950 Brake fluid DOT4 0,5 ltr
059951 Brake fluid DOT4 1 ltr


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