I have a 07 5.4l screw its only got 10k on it but I really don't have any complaints about it. I agree with everyone else its a good truck motor good low end where it should be I have been getting 14mpg lately, but that is down I was getting close to 17 maybe it the the winter blend gas like everyone was telling me plus I am changing oil and air filter this weekend to see how that helps. It has plenty of power too many people are getting sucked in by those HP # they are great and all but tough dependable is more important to me so far I don't really see anyone that's doing it any better than Ford IMO.

P.S. All modern truck engines have plastic intake parts and they work fine so no worrys there.