Abstract: An apparatus and method for removing, flushing contaminants from and replacing vehicle brake fluid. The apparatus has storage tanks for fresh and waste hydraulic fluid, a fill pump to pump hydraulic fresh hydraulic fluid to the vehicle braking system, an adapter for sealably connecting a fill hose to the master cylinder, a suction pump to suction used hydraulic fluid from the vehicle braking system to the waste fluid tank, a suction hose for suctioning fluid out of the master cylinder and hoses for connecting the waste fluid tank to the bleeder valves located at the vehicle wheels. A by-pass valve is provided between the fill pump and master cylinder to by-pass fluid when the fill hose reaches or exceeds a predetermined level. A computer and ancillary electrical and fluid connections between the various parts of the apparatus and the hydraulic fluid system of a vehicle are also utilized. The apparatus can also be used when replacing the master cylinder or when replacing fluid in other hydraulic systems (i.e.