What the f%^$!! Is it possible for the vac. tree to blow fluid into the plenum????

[Stang_ROTY]

I had a fuel leak on the drivers side rail so naturally I had to remove the plenum. I first removed the cover to the plenum and I found a dark fluid sitting in a small puddle right where my vac. line enters the plenum through the fitting on the underside of the plenum. What the hell is it?? I blew through the vac. line coming from the vac tree and a little bit of fluid came out and it looked to brake fluid b/c it was darker than my oil. What does that vac. tree do and could it be brake fluid or engine oil. I have been having cooling problems since the motor first started. Thanks

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Finally DONE!!
93 GT, 393 stroker w/ Edlebrock Performer heads and EFI, 30lb injectors, Dynamic Roller Mite C4, 8 pt cage, Sothside Machine bars & Sub-frames, 3.73's, '69 351W block w/SCAT crank.