TSB below says there is a diagnostic test for this engine. Ford claims the Ecoboost is hard on the engine oil and the first sign of problem will be timing chain. My only advice is find a shop with a Ford IDS to test first. Integrated Diagnostic System. Sounds like you are probably right. I had my reservations when I first heard about Ecoboost engines.

https://www.knowyourparts.com/techni...3-5l-ecoboost/


http://ecoboostforum.com/threads/tsb...oost-3-5l.137/