About a week ago my 235 in my truck started to run really rough when i would hold the brake pedal hard to the floor. When i would let up and only apply light to med pressure to the pedal it would smooth back out.

By disconnecting the vac line to the booster i confirmed it was the booster for sure. Im currently running the booster vac line from a T fitting on the manifold that has the other end connected to the PCV valve. I see lots of other people do the exact same thing on all kinds of setups to feed the booster so i think im still safe to do it.

As i tilted the booster to get it out about 1/4 cup of engine oil poured from the vac inlet port. Found out after that my booster one way valve was not restricting air from flowing in, thus every time i would release the brakes the booster would suck in air from the t fitting where the combined PCV port was attached. Im a little concerned as to the amt of fluid that accumulated. It could have been pulling fluid for some time now. I think the rubber in the booster finally gave in and developed a hole in a location where it would fail and full travel.

Possibly my PCV is getting splashed where it is installed in the old breather tube location but it still has the oil baffle installed in the crank area. Its got me a bit concerned that im pulling too much oil mist or something.

Any suggestions?