We all want to keep oil out of our intakes and intercoolers but the increased blow by of a forced induction engine and the fact that there is nothing to clean the intake valves on a direct injection engine makes it critical to keep the PCV gasses entering the intake oil free. For the Ford GT, Mustang GT500, 3.5 Ecoboost and 2.0 Ecoboost there are oil separator kits that work and some that aren't so hot but so far the 1.6 Ecoboost has neither. I have noticed that JLT makes some nice separators with OEM style fittings so I asked them if they would make one for a Fiesta ST. They said they would eventually but so far have not. What they do have is a video showing the difference in performance comparing their separator to a ~direct copy. I don't want to directly copy their product but since I can't buy one yet I'm going to diy. Any way it seems like a path for the vapor with a couple turns where the heavier molecules probably slow down and begin to condense and then a filter with a ~large surface area that finishes the job. The copy didn't have the filter and it was not terribly effective. My plan includes a Matheson 450b gas purifier. I found one at a surplus store for $20, then bought a new sintered bronze filter for it. The filter is speced for 2,000 psi gas but since I'm going to run far lower pressure I'm not too worried about exceeding the temperature rating. There is one o-ring in the filter which is probably the weak point of the design when looking at temperature ratings, I bet sintered bronze will survive fairly high temps. Speaking of sintered bronze, its a quite large element and I was impressed that I could blow air through it with minimal resistance, far better than a cheapo compressed air oil separator from Lowes. And that's as far as I've got. The PCV hose is tremendously expensive and I'm not ready to cut mine in half. I've got to figure out how I can get OEM style fittings for cheap then I'll plumb it up. If you've got something working let us know.