I'm just not sure about the GDI - coking of the inlet valves can be an issue - but I have a catch tank plan if necessary. They seem to do OK in Fords, but there are coking issues across manufacturers with GDI's. Some manufacturers also have oil dilution problems. Plenty on the internet about all of this.
Dave, I'm trying out a Provent 200 filtration and catch tank mod to my GDI. Ford say they've cracked the GDI problem but I thought it worth the effort.. i'll see how it goes.
