Is this what I use to catch the oil from the PCV?

my first thoughts exactly at first but i would think you would remove the two lines at the top of the catch can and turn upside down to drain. it seems like its easy to install and easy to remove the unit to drain. if unsure ask the seller.looks like a good deal to me.
 
Roland69 said:
do they go inline kinda like an inline filter (but not a filter just an oil catcher) and why would you need one
Yep, it just goes in-series. Guys have used a filter (like a clear fuel filter) but it can require periodic cleaning (even the element in my separator kept clogging, so I ditched the element).

It helps keep blow-by out of the intake, which keeps things cleaner and arguably helps ward off related-detonation. I think a lot of us do it just to do it.