I realize mileage will always be jeoperdized from emissions. With that being said, are the 6.4 getting 15mpg or around 19mpg. I haven't heard from anyone what the 6.4 are getting. Don't know anyone who has one. lol

 

6.4s are getting lousy mileage.Worse of the big three best as I can tell from reading the G.M.and Ford forums also.They(6.4 owners)know it also.Lots of posts on mileage.

 

What problems are the 6.4 owners running into as far as motor issues? I know the 3ft flames out of the exhaust was one issue, but what else? I know there are more. LOL

 

Not much more for a redesign of a real headache the 6.0. Flame throwing was corrected real quick.On going post/threads about making oil,dipsticks reading high , same deal like the 6.7 thread.A engine TICK noise that occurs after first oil change.May or may not go away in couple thousand miles as some say others say its just there and won't go away.Ford is digging into it and it seems hard and heavy with no repair as of yet. New Duramaxes have a similiar noise that G.M.says is normal.Ford does not comment or commit to that yet.They must sell a lot of 450s as lots of posters are driving them and some have a lot of bells and whistles.No real compliants about how those trucks pull,drive,stop with big loads etc.I've been reading some Ford forums every few days or so.