Hi, I bought a hose and a valve so that the air does not come back when releasing the valve… My question I have ABS and 4 disc brakes, is this even recommended with the pumping method? I once googled, one says yes the other no etc…. It is a Lumina 98 3.8L with ABS, in the Rep. manual also stands the pumping method, however, to air not for the change of the brake fluid, however the workshop at the other Lumina au I had to pump, and he sucked the fluid, or what do I know…