Don't forget about the timing chains on the front and the rear of the engine. Not to mention the cab has to come off to repair them. They also leak oil really bad. And then there's the 10-speed transmission with a few problems like the CDF drum problems, shuddering and slipping. I would definitely stay far away from a Ecoboost F-150. Look up flying wrenches on KZbin. He is a certified Ford mechanic and goes into deep details about them