 We were very please with the truck until I started noticing strong gasoline smell in my oil right after the warranty ran out.  I changed the oil and sent an oil sample to Blackstone Labs and they confirmed there was much more fuel in the oil sample than normal.  The new oil picked up the same strong gasoline smell after the next trip.  Blackstone Labs sent me a Technical Service Bulletin (TSB 15-0003, "3.5L GTDI - FUEL ODOR FROM ENGINE OIL AND/OR ENGINE OIL LEVEL OVERFULL") and told me this was a problem they had been seeing on a number of EcoBoost engines.  I did a little research and this sure was a known problem, but I could find no recalls.  I called the local Ford dealerships and they all wanted to charge $200-$250 to diagnose my problem.  They could not guarantee me that Ford would cover the diagnostic costs or repair costs (~$600+) to fix it (one dealership service manager was very frank and told me it was highly unlikely).  I have called Ford Corporate Headquarters three times over the last two years to get them to cover the repair but they refused.  It did not matter this was a known design problem for 2011-2014 EcoBoosts, that Ford acknowledged with a Service Bulletin.  Ford's poor design rests on the customer's lap to pay and fix.  I understand that complex systems can have problems, but the manufacturer needs to own those problems and make it right.  I used to be a loyal Ford truck buyer (this was my 3rd Ford truck and 4th Ford vehicle).  I am NEVER buying a Ford ever again.  BTW, the stopping distance was pretty poor (compared to my much heavier F250 diesel and every other vehicle I have driven), and the brakes were definitely too weak for trailer towing (even a light trailer) and I could never get the original dealer to acknowledge the issue.