Brake Fluid Change in Sunbury-on-Thames
Brake fluid absorbs moisture over time. That lowers its boiling point and can affect pedal feel under heavy use, as well as encouraging internal corrosion.
We test fluid condition and replace it with the correct specification, using the bleeding procedure your vehicle requires.

Why fluid degrades
Most brake fluids are hygroscopic — they draw in moisture from the air. Manufacturers usually specify replacement on a time basis, often every two years, but intervals vary.
Some vehicles need diagnostic equipment to cycle ABS valves during bleeding.
What we check
- Moisture content/boiling point
- Fluid level and colour
- Leaks at hoses and calipers
- Pedal feel
What we can do
- Brake fluid replacement
- ABS-assisted bleeding where required
- Clutch fluid where shared
How it works
The process
- 01
Test the fluid.
- 02
Replace with correct specification.
- 03
Bleed each circuit.
- 04
Check pedal and road test.
Why The Factory
Main-dealer capability, independent service
A Master Technician-led workshop with seven mechanical ramps, a dedicated MOT ramp and dealer-level diagnostics. Faults are shown to you and additional work is quoted before it goes ahead.
We stand behind the work we carry out. Parts and workmanship are covered in accordance with your statutory rights and any applicable manufacturer or supplier warranty. Please ask us for details relevant to your repair.
- Diagnostic-assisted bleeding
- Correct DOT specifications
Free local collection & return
Available by arrangement within approximately five miles of our Sunbury-on-Thames workshop. Further afield? Just ask us.
FAQs
Brake Fluid Change: your questions answered
Why does brake fluid need changing?
It absorbs moisture, which lowers its boiling point and can promote corrosion in the system.
How often should brake fluid be replaced?
Refer to the manufacturer schedule — many specify every two years, but intervals vary.
Can old brake fluid make the pedal feel different?
Yes, particularly under heavy or prolonged braking when moisture-laden fluid can boil.
How do you check the condition of brake fluid?
We test it for moisture content or boiling point and inspect it visually.
Is brake fluid changed during every routine service?
Not necessarily — it depends on the manufacturer schedule. We’ll tell you when it’s due.
Related services
Brake Repairs
Pads, discs, calipers, hydraulics and electronic parking brakes.
Car Servicing
Servicing to the manufacturer schedule for all makes and models, petrol to full EV.
Vehicle Health Checks
A thorough independent check of your vehicle’s condition.
Need help with brake fluid change?
Send your registration and a quick description on WhatsApp, or call the workshop.
The Factory, Harris Way, Sunbury-on-Thames TW16 7EL