Hydraulic Break Fluid HD


PSO Hydraulic Brake Fluid HD has exceptional anti vapour lock properties, thus effectively minimizing the risk of brake failure due to vaporization of the fluid at very high temperatures experienced in modern disc brake systems. PSO Brake Fluid HD is compatible with the various metals used in braking systems, and offers excellent protection from corrosion and wear. Furthermore, PSO Hydraulic Brake Fluid HD has seal-swell and lubricity properties which are required for a long and trouble free service life.


  • PSO Hydraulic Brake Fluid is especially formulated for use in automotive disc brake systems. In addition, this fluid is suitable for use in all hydraulic brake systems with the exception of those where a mineral oil based fluid is required. PSO Hydraulic  Brake Fluid HD offers high level performance and can safely be used in the most demanding applications.


  • Excellent lubricity properties.
  • Miscible with other SAE J 1703 fluids.
  • Smooth and safe braking.

Performance Standards

SAE J 1703
FMVSS  116 DOT 3

Typical Key Properties:

PSO Hydraulic Brake Fluid HD
Kinematic Viscosity @100°C,cSt
Equilibrium Reflux Boiling Point (ERBP), °C 205
PH 7.0-11.5

These typical characteristics are of existing production, the future production will conform to PSO blending specifications hence any variation in these characteristics will not affect the product performance.