 I had a 97 F250 Diesel and bought this 2005 F350 Diesel.  This truck will not stay on the road and Ford can't seem to reproduce it.  I would say that it is DANGEROUS!  If they can't fix it I'm going to try and invoke the lemon law. Ford has always made the best trucks on the market, unless this is an isolated problem, they have now given that title up.  I wouldn't buy another one! So far in two checks of milage I'm getting an average of 13.5 MPG.  Not very good, since the old truck got 17.