 This truck is an absolute blessing.  Loved it, loved it, loved it.  Everything about it.  Until 9 years later at only 77K miles, the engine blew. Ford knew about the faulty production in this powerplant and did nothing about it.   Poor oil pressure causes cam phaser problems which causes misfires which effects timing chain, tensioner and guide.   Too costly to repair especially after it's fixed, it's not.  Problem will return at some point.  So you're only recourse is to replace with a rebuilt engine at a cost of $8000+    Truck is not worth it.  What a sin.  DO NOT buy any Ford with a 5.4L Triton engine unless you can put in the rebuilt engine yourself.   You would  have a winner than.  Shame on Ford