+1. At that point you need to be looking at both the inlet and the outlet on the cool side of the turbo to see where all that oil is coming from. If its only from the outlet only, your turbo needs some lovin' (or replaced). If its all over the inside of the turbo inlet you've got some issues with the pcv system or some major blow by = needs a compression test.

IMO though, oil catch cans are a good thing. You don't need to go for bling (unless you want to ) but they are effective in helping prolong the life of your turbo and keeping the internals of your motor a little cleaner. I've also heard that a catch can with a decent filter media will also give you a little better overall gas mileage assuming it has been installed properly. Basically the dirty stuff that was pumped through the pcv system before is no longer contaminating clean air/fuel going into the combustion chamber.

 

So basically the oil catch = Not really necessary, but can be somewhat useful.

 

yeah it can be useful, as long as you don't spend over $20 on it and you should be able to get all parts from it from lowes .
also it's important to put it in the rigt place so it would do its job properly.

 

yeah catch can's are way expensive. but if you have the money to burn why not. I'd rather upgrade the turbo and suspension..so u can "feel" the difference