Long time lurker, first time poster here. I have a new 2014 Ford Fusion with the 2.0L Ecoboost engine. I plan to maintain 5000 mile OCIs due to stop and go traffic here in Atlanta. Ordinarily, I'd simply use the recommended Motorcraft synthetic blend, but since this is a direct injected turbo four, I'm curious whether I would be better off paying more for full synthetic. I've read conflicting opinions on this, with some saying the combination of dilution issues from the DI and heat issues with the turbocharger lean toward recommending a full synthetic, even with the shorter OCIs, and others saying since Ford recommends the synthetic blend, it is fine to use it. I do not drive the car hard very often in terms of driving fast or getting the RPMs extraordinarily high, but I do have a whole lot of stop and go traffic. Any advice is appreciated.