Just was looking for some great info and check in with forum. I have had multiple problems with my 2011 raptor bought in NW Arkansas in Bentonville, AR. I have had my raptor since Late January 2011 and before I hit 1.000 miles I had an engine oil leak. Brought it in to dealer for repair which appeared to be done; several hundred miles later check engine light came on after a fuel fill up. Took it back in for check up and codes were reset and no additional codes or engine light. Just made first Highway trip of 600 miles or so and truck made it back to home with a knocking sound from engine. I took it to dealer and it has been there for the past couple of weeks for a total engine replacement. I'm guessing a "thrown rod" or some other catastrophic engine failure. Don't know what went wrong, truck has not been pushed at all thus far, just 10 min commute back and forth to work and a few gravel roads here in NW Arkansas; absolutely no hardcore offroading at all. Would love to hear some discussion on this. Thanks, Matt.