In order to understand what brake fluid flushing is and how it helps, we must first briefly mention what brake fluid is and its
use.  Brake fluid is a hydraulic liquid and is a medium used to transfer power to perform work.  For example, brake fluid is responsible for transferring the force of stepping on your brake pedal to the calipers, where brake pads will press down on the brake disc, which stops your car. 

                                                             *Photo Source:  brakebleeder.com

Brake Fluid Collects Dirt and Attracts Moisture

Brake fluid is hygroscopic, which means it has the tendency to absorb dirt and moisture from the atmosphere and its environment.  If your brake fluid accumulates too much dirt or moisture, then this will lead to the reduction of your brakes’ ...