About to do this too!It's not too bad, but is tedious, I used about 4 quarts of fluid. I wedged my phone (w flashlight on) behind the AHC tank so I could see the fluid level. I bled each line until there was bright pink fluid coming out, which involved several drops/rises on each accumulator. Also, I was getting overflow when I tried to fill the tank through the hose, so I just removed the hose (w white cap) and pumped fluid directly into the tank.