Well, after having a valve replaced and valve job done on the wife's 2007 S, I also broke the PCV tube putting it back together. I temprorarily gorilla taped it together until I can replace, but it leaked a tad and I can see oil coming out of it, so I figure rather than just fix it and potentially have the engine gum up again, I should do something about the oil issue. I'm debating putting a baffle or piece of foam right where the tube comes from the valve cover or putting a catch can in. Has anybody done a simple baffle there or some foam there to catch the oil? A catch can seems overkill and just adds another maintenance item.

 

If you don't mind me asking what was the reason for having to get your valve replaced and was it an intake or exhaust valve? I also own an 07 MCS.

 

Machine shop thinks defective exhaust valve. I think carbon buildup may have played a part as it was pretty gunked up, hence why I'm planning to put something in the pcv line to prevent oil vapor getting sucked into the engine. I've attached a pic of the broken valve. I have some video somewhere I took with a boroscope of the intake valves, they were gunked up beyond belief, so I want to try to prevent problems again.

 

I'd look into a catch can with internal baffles. You'll want to stay away from something installed in-line, it will gunk up pretty quick. The catch can allows the engine to breathe normally, but uses physics to separate the oil from the air. When the oily vapor enters the can, it's velocity suddenly drops due to the volume increase of the canister, and the liquids fall out of suspension.

 

Local auto parts store had a filter meant to go in-line with vac operated brake booster, so I'm going to try that and see how it works. If it gunks up, I'll put a catch can in or some other baffling.

 

Keep us posted, I'd be very curious about this. Is it a see-thru filter?