I installed an oil catch can a couple of weeks ago. I pretty much used the method from Nutz about Bolts in terms of hose routing, Ruien 0046 OCC, etc. I did find I was able to get to the pcv valve without having to pull the manifold. The box end of 22mm (I think) combination wrench did the trickafter I removed a cable and a vaccum hose that ran to the throttle body to make a little more space. Here's the interesting part- I just opened the can after about 800 miles and it was nearly half full with a caramel colored milky liquid. Probably 2-3 ounces. Seemed like more water than oil but I'm assuming the milkiness is due to some oil. I was surprised to find that much fluid. Granted we are in winter and there could be a lot of condensation in a cold oil catch can system, especially on short trips. We had a couple of 200 mile trips in that 800 so that should have warmed in up good. I run 10% ethanol gas which can also tend to carry water. For those of you with OCCs, does this seem normal? Thanks! Edited to add- it is a 2015 v with about 72,000 miles on it. I haven't detected any oil usage issues- have never had to add between fills.