Extremely important and often overlooked, brake fluid is the medium that transmits energy from pressure on the brake pedal to the caliper and wheel cyliner pistons. Decomposed brake fluid can also dry seals, thus causing leaks and failure. By flushing the braking system you will protect the braking system from harmful dangerous deposits and varnish build-up. Since brake fluid absorbs moisture, most manufacturers recommend flushing the brake system every 2 years. to learn more visit BG's website just go to. www.bgams.com