[jwetering]

The problem is that you don't want to mix the new fluid with the old fluid. You have already figured out that removing the old fluid is difficult, but it's not impossible.

1) Option 1 is to get tubing with diameter small enough to fit through the gaps in the "inverted cup" as you call it. You still need to figure out how to get suction on the end of this small diameter tubing though. It's tricky. You can try a well rinsed liquid soap dispenser pump..that has worked in a similar application for me in the past.

2) Option 2 is easier - that is to push the old fluid out through any one of your bleed screws using your pressure bleeder. You don't say what system you are using but if it's a Motive power bleeder then of course you would do this without putting any new fluid in the reservoir of the Motive. I built my own power bleeder using a pesticide sprayer - basically the same as the Motive but without the pressure gauge.

Here's the trick though. You have to stop pressurizing just before the master cylinder reservoir runs dry or you may push air into your ABS valves. LFMF here and do not do this. Unbeknownst to me (and probably you) is that the brake fluid reservoir is split into two compartments front to back. I was pushing out my old fluid watching the level from the front of the car and then heard air blowing through my front left side bleed screw even though the fluid level looked very high.

Well, I looked from the side and lo and behold the back half of the reservoir was totally empty. Much pain and suffering followed. I deduced that the back half of the reservoir fed the front brakes and the front half the back brakes.

Another tip...procedure is to bleed the inside screw first, then the outside screw, of course still starting with the caliper farthest away from the reservoir.

Another tip - don't bother bleeding the clutch. The procedure is a bear. Do not worry about dropping the fluid level in the master reservoir below the large diameter tube coming out the side. That tube does feed the clutch but air will not get into the clutch hydraulics even if a bit of air gets in that inlet tube.

Need more ? Post away.