My master cylinder failed. I replaced it and found that the fluid had accumulated in the booster. I removed the booster and poured out 16 ounces of brake fluid. I washed it out and dried it the best I could. Has anyone done this? Is the booster going to fail anyway? It is galvanised and looks great. I am going to drive it for a few days and test it. I already ordered a new one just in case. I'll get the video up soon. I poured 16 ounces of brake fluid out of the booster. Some of it was clear the rest was nasty.