Wanted to bump this thread. Anyone running catch cans actually catching anything?
My car at 28,000 miles had a small amount of oily build up inside the PCV hose. The engine side of the PCV valve was coated with oil and there was a small amount of oil on the outer nipple side of the PCV as well. It wasn't enough to worry me at all but there is definitely some blow by getting past the PCV valve and into the intake. Although unnecessary, I might run a catch can just so I know things are super clean inside my engine.