I own an '06 6.0 F350 dually. I pull a JAYCO weighing about 12,500 empty. I bought these two as a package from friends who were stopping RVing. I have never been sorry I have this truck. I did the research, early on and for a 6.0 with less than 50K miles I felt it was money well spent to have the "dealer-proofing" done by a reputable shop. I went to powerstroke.com shop in Buford, Ga and pulled the trailer home from the repair with no problems. Yes, it cost me some bucks, but I plan to have it for a long while, I hope, trouble free. It is a good engine, just government requirements foul things up, as usual. JMHO