So does anyone on here have 6.4? If you do we have been trying alot of on this thangs to get better the 9mpg. check it out http://www.youtube.com/watch?v=XkTM0wl8DrA

So does anyone on here have 6.4? If you do we have been trying alot of on this thangs to get better the 9mpg. check it out http://www.youtube.com/watch?v=XkTM0wl8DrA

someone was at the pull last night bragging he's getting 23

i want to see that. I dont dought it since on the highway with my friends truck hes
19-20mpg