Your master Cyl. is definately bad.  This is the only area
where they can leak, when they go bad.   Make sure you
clean and reseal the connection to the vacuum booster.
Use a little Sylicone seal if needed.
                             Eric

Craig wrote:

>Hello all,
>
>I can't STOP buying new components for my braking system on my 81 van with
>a hydraulic clutch. Ok, I have mushy pedal that eventually goes to the
>floor at stoplights on inclines. I now have new rear shoes and calipers. I
>just purchased a new master cylinder and upon draining all the nasty,
>partially blackish brake fluid I removed the old master cylinder to
>discover---
>
>fluid or oil, lube? in the the vacuum servo unit!
>
>Is this normal? I hope so or else cha ching! at some parts outlet.
>
>As the sun sets in the west, I gather my tools, and begin planning my day
>with public transportation.
>
>Any advice or help is appreciated. Craig
>
>
>
>