Re: 6.4l mpg??
definitely hand calculate it, (fill it till it clicks once, set to 0, drive it for how ever long u want, then fill it back up till it clicks once, then divide how many miles you drove by how much fuel you put in) . Also driving habbits have a big effect on mpg's, and yea the 40's dont help lol.
06' F-250 CC SRW 4x4, 6" fabtech lift, bilstien 5100 shocks, 4" MBRP TB no cat, ARP studs, 2 JL audio 10" W0, 20x12 weld cheyenne 8's, 35x13.50x20 Mickey Thompson Baja ATZ
BNIB 6.0 head with all related hardware, straight from FORD. For Sale PM me offers