all i have to say to that is its too bad your dealer is clueless...that is not a normal "sick-0". im not a big fan of the motor as a mechanic since ford has had problems that are extremely tough to figure out and dont pay once you do......and those problems are pretty consistant throughout the line.....but i will say that i have driven them, and trailer or not, a properly running sick-0 is a scarey thing power wise. they run like a gas motor on steroids.....they just keep pulling and dont seem to power down much loaded......sounds to me like either you just got a bad one or your dealer is just that stuped. the fuel milage isnt great with them, but its not that bad either.....if your planning on staying ford though....you may want to wait. they are releasing a new motor, rumor has it mid year in 07........and if the rumors about it are true....it should be a manace to socioty.......twin turbos amongst quite a few other things.......Marc