Recommended price € 30.70

Performance Level Show more

SAE J 1703
US FMVSS 571.116
DOT 5.1


Bardahl Synthetic Brake Fluid DOT 5.1 is fully synthetic and can be used for competition (racing-, rally-, cross- and off-road) and hydraulic braking systems of passenger cars, trucks and busses. It has a very high basic boiling point but most of all a very high wet boiling point. This ensures the best possible safety margins against bubble formation and brake failure. A regular fluid change is essential to ensure driver safety. Brake fluid is like a motor oil, it also looses its efficiency with time. Not changing a motor oil can lead to engine fail¬ure, but not changing Brake fluid can endanger lives.


  • Perfect stability at high temperatures.
  • Perfect chemical stability
  • Practically no effect on rubber
  • Maintains the right viscosity over a wide temperature range
  • Is suitable for all types for vehicles.
  • Is stable in varying climates, from very cold to very hot
  • Can be mixed with all synthetic brake fluids DOT 3,4 and 5.
  • Outperforms the US FMVSS* 571.116 and SAE J 1703 specifications.
* Federal Motor Vehicle Safety Standard

The problem

Brake Fluids wear out with time. It absorbs water from the atmosphere and its boiling point drops rapidly. Old and diluted brake fluid represents a major safety hazard. Steep downhill runs or heavy braking pose the risk of vapour-bubbles developing in the brake system-with braking efficiency falling off suddenly.

The higher the wet boiling point, the bigger the safety margin.

Brake Fluids absorbs humidity (water) from the atmosphere in the course of time. This reduces the basic boiling points and, in turn, brake safety. In extreme cases it can lead to total brake failure. Therefore, the higher this wet boiling point, the bigger the safety margin.