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BRAKE FLUIDS

High performance isn’t just about making cars go faster. It’s also about ensuring they stop safely.

Brake fluid
CHECK IT
CHANGE IT    
TRUST IT

Never take a break from checking brake fluid. Make it part of every service.

 

At Castrol, and in Castrol partner workshops, we know high performance isn’t just about making cars go faster. It’s also about ensuring they stop safely. But even though brake fluid maintenance should be done as part of the regular vehicle service, 1 in 4 vehicles on the road have been found to have ineffective brake fluid. [1] The problem is that brake fluid absorbs moisture as it ages. As little as 3.5% water can reduce brake fluid effectiveness by up to 40%.

 

[1] Periodica Polytechnica Transportation Engineering.  Operational Tests of Brake Fluid in Passenger Cars, June 2019 

CHECK IT

 

Most manufacturers recommend a brake fluid change every 24 months (or 24,000 miles) but at Castrol we suggest checking at every service. Ideally with a professional testing machine. 

 

CHANGE IT 

 

Anything over 2.5% water content we’d recommend draining and changing the brake fluid. Over 3% water content and changing is essential. 

 

TRUST IT 

 

Castrol brake fluids are available in a range of formulations to suit every type of vehicle and driving situation.

Break Fluid How To Check It

Our fluids are engineered to have higher boiling points than standard fluids, providing extra assurance of brake fluid performance. 

 

Giving you, and your customers, confidence that the vehicle can stop safely when out on the road. Or even out on the racetrack. 

 

Never take a break from checking brake fluid.

Make it part of every service.

Brakes_Web Image

* Based on comparison of Castrol portfolio dry boiling point vs. ISO 4925 
^Wet boiling point is temperature at which a dot fluid begins to boil after it has absorbed 3.7% Water by volume (equates roughly to 2 years service).

What do Brake Fluid DOT ratings mean?

 

All forms of brake fluid are given a DOT rating. DOT simply stands for ‘Department of Transport’, which sets the safety regulations for the acceptable performance of different brake fluids. 

 

The DOT ratings given to brake fluids are based on the liquid’s dry and wet boiling points. As a rule of thumb, the higher the boiling point, the longer the lifespan of the brake fluid

CASTROL REACT PERFORMANCE DOT 4

CASTROL REACT PERFORMANCE DOT 4

Castrol REACT PERFORMANCE DOT 4

Specifically designed to supersede high temperature requirements of DOT 4 specifications.

NB: It should not be used in braking systems where a mineral oil based fluid is recommended.

MEETS OR EXCEEDS INDUSTRY STANDARDS:

 

  • SAE J1703 & J1704
  • FMVSS 116 DOT 4
  • JIS K2233
  • ISO 4925 Class 4
CASTROL REACT SRF RACING

CASTROL REACT SRF RACING

Castrol REACT SRF RACING

High performance brake fluid of special value in competitive motor sport where extreme braking conditions are encountered.

MEETS OR EXCEEDS INDUSTRY STANDARDS:

 

  • FMVSS 116 DOT 3 & DOT 4
  • ISO 4925 (Class 4)
  • SAE J1703
  • JIS K2233 (Class 4)
CASTROL REACT DOT 4 LOW TEMP

CASTROL REACT DOT 4 LOW TEMP

Castrol REACT DOT 4 LOW TEMP

Specifically designed for applications where a lower viscosity at low temperatures is required.

NB: It should not be used in braking systems where a mineral oil based fluid is recommended.

MEETS OR EXCEEDS INDUSTRY STANDARDS:

 

  • SAE J1703 & SAE J1704
  • FMVSS 116 DOT 4
  • ISO 4925 Class 6
  • VW TL766-Z
  • JIS K2233