I have been nothing but a ford diesel guy my whole time of owning vehicles. I had great luck with them until my 04 6.0, I fixed that problem by buying a new '05. My family and I have logged about 1,700,000 miles on 6.9's through the 7.3 powerstrokes, with great luck. My'05 6.0 was a pullin dude with reasonably good milage, wish I could say the same for my new 6.4! I pull hard with my trucks, thats what makes my living, and I know exactly what my trucks can do with my trailers on certain hills. I have had the same trailers for years, 32' and 40' tandem dual trailers. I am pretty confident that not too many other guys gross any more weight than I do. My truck and 40' gross right around 16000 EMPTY, then I load them. I am not going to put down my gross weights loaded so as not to be chastised. My 7.3s handled these loads with ease never getting less than 7.5 mpg., the 6.0's handled the loads well but could get as low as 4 mpg., my new 6.4 is about 10 to 15 mph slower than the 7.3's and all they had were straight pipes! I just got my 6.4 out of the shop today for a new radiator that developed a split. I have been complaining about the power and they can't find anything wrong, but the service advisor is great and I am bringing it in with a trailer in the morning, to see if anything shows up on their computer while pulling. I think it is a good engine, more refined than the rough running 6.0's, SMOOTH is a good word to describe it. It gets decent milage, I have seen it get 5.0mpg. though, empty I can feather it along and get 17-18. I love the truck, it handles and rides great, and I am still a firm believer that Ford builds the toughest truck, bar none! I really hope that mine is an exception and everybodyelse has good power, I just know mine is weak because I have kept accurate records on what all my trucks can do with these trailers on certain hills. I will let you know what happens with my dealer tomorrow. If anyone else has similar power problems let me know please! Thanks.
