fuel consumption on my 03 6.0 help?

[josho5859]

i have an 03 f350 crew with a 6.0 and automatic. it has a dump body and pulls a 14ft box trailer. im currently gettin 7.5 mpg on the crappy ultra low sulfur fuels. is this out of the ordenary? to me it seems very low for a diesel. and also wat mods can i look into to help this?
03 f350
crewcab xlt
6.0l auto
4x4
dump
k&n intake

 

[Mooring Product]

Sounds like weight is your problem. Exhaust system will help a little.

 

[Scooter's Roofing]

I would quit buying crappy ULSD and get some quality ULSD!