Air in the brake system can make your brake pedal feel spongy and vague. You should flush the fluid every two or three years, ...

The whole goal of brake bleeding is to flush out any air (a ... it's more effective to force fluid up from the caliper to the master cylinder, pushing air in the direction it naturally wants ...

Most musclecar enthusiasts have heard that you should bench bleed a master cylinder before installing it on the car but not everyone follows this advice because they think it’s not necessary.

Cover, but do not seal, the master cylinder opening to keep out dust and dirt ... Note: It's critical to follow the correct ...

Bleeding the brakes will flush that air ... pedal to prevent it from traveling too far and overextending the brake master cylinder when the brake system is opened and the line pressure is released.