How Often Do a Brake Reservoir Flush

Brake fluid reservoirs should be flushed at least every two years, or when the fluid level reaches the “MAX” line on the reservoir. This video from YourMechanic shows you how to flush a brake reservoir.

What is a brake reservoirflush and when should it be done?

A brake reservoir flush is a service performed on a car’s brake system. This service cleans and lubricates the brake system. The frequency of this service will depend on the type of brakes the car has and how often they are used.

Types of brake reservoirs

A brake reservoir flushes when fluid is drained and the air bubbles escape. This occurs when the brake pedal is pressed hard or when the brakes are applied suddenly. When this happens, the reservoir isn’t able to keep up with how fast the fluid is being drained, so some fluid spills out.

Brake reservoirs can be classified in a few ways: manual or automatic; and fixed or floating. Manual reservoirs flush when you release the brake pedal whereas automatic reservoirs only flush if there’s an issue. Fixed reservoirs are always flush no matter what, whereas floating reservoirs have a hole that allows them to drain while the bike is in use.

The best way to determine if your reservoir needs flushing is to check it before each ride. If it seems full or there’s fluid spilling out, it probably needs to be flushed. You can do this by removing the cap, releasing the pressure, and waiting until fluid starts draining out of the reservoir. Once it does, replace the cap and ride as normal.

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Procedures for flush a brake reservoir

Your brake reservoir should be flushed every time you do a brake job, regardless of whether or not the system is working. Flushing the reservoir will remove any debris that has built up over time, and it will also flush any fluid that may have leaked out.


In this article, we will discuss the brake reservoir flush and when it is necessary. Brake reservoirs can become clogged over time, which can lead to a decrease in braking performance. If you are experiencing a decrease in braking performance, it is generally recommended that your car be brought in for a brake reservoir flush. Scheduling this service should not be difficult, as most independent mechanics have access to the necessary tools and equipment.

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