How Often Should Brake Fluid Be Changed

The recommended replacement interval for brake fluid is every 2 years or 40,000 miles, but always refer to the schedule specified in your vehicle's user manual. However, for vehicles like taxis that undergo intensive use, drivers should monitor the condition more closely - typically requiring replacement every 6 to 12 months. Regular changes are beneficial for maintaining optimal vehicle performance and ensuring driver safety.

The brake fluid replacement procedure consists of the following 6 steps:

1. First, turn off the engine and open the bonnet.

Then use a large syringe to extract all the existing brake fluid from the reservoir.

1. Prepare new brake fluid of the same specification and use a funnel to refill the reservoir. Take care not to spill any fluid on the engine compartment as this may cause corrosion.
2. Next, use a jack to lift the vehicle,

then remove the dust cap from the brake caliper's bleed screw.

1. Using a spanner, loosen the bleed screw and attach a rubber tube to it, connecting the other end to a drainage bottle.
2. One person should operate the brake pedal while another observes the fluid drainage. When the fluid in the tube appears significantly lighter in colour, this indicates successful replacement.
3. Finally, tighten the bleed screw and check for any leaks before concluding the procedure.

Important precautions regarding brake fluid usage:

1. Never mix different types or brands of brake fluid as their additive formulations and specifications vary, which can affect performance.
2. Immediately replace or filter brake fluid if it absorbs moisture or becomes contaminated, as this may lead to reduced braking efficiency.
3. If your vehicle pulls to one side during braking, conduct a comprehensive inspection of the braking system. Swollen brake caliper rubber seals indicate potential fluid quality issues, necessitating immediate replacement of both fluid and seals to maintain proper braking function.