High performance isn’t just about making cars go faster. It’s also about ensuring they stop safely.
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.  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%.
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.
Anything over 2.5% water content we’d recommend draining and changing the brake fluid. Over 3% water content and changing is essential.
Castrol brake fluids are available in a range of formulations to suit every type of vehicle and driving situation.
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.
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