robtoya
SDD Junior Member
I have a 2002 4x4 dually with 122000 miles on it. I've had it for about five months and have never had better than 13mpg empty on the highway. I've towed a 9000lb. toyhauler a few times averaging around 65mph and this has gotten me 8.5 to 9 mpg. Does this sound like there is something wrong with the truck or tranny? I don't consider myself heavy footed and the truck is completely stock. Are these dually's really that bad at milage? Does anybody know the axle ratio's on these trucks. Whay type of minor mods might help raise the milage? Thanks for any help/suggesstons.