I don't want to break any ones heart but my Raider with 4.3 and 32" MT gets 20.5mpg on the highway, and uses about 3.5 gal. for a whole day of off roading. <img src="/forums/images/graemlins/butwiggle.gif" alt="" />
I got only 14.5 mpg same conditions with the 2.6.
I think the 35" tires are just too big for the 2.6.
Bob Shaw

87 Raizer, 4.3V6, Mod TH700R4,231CHD, detroit rear and LSD front, bouncy seats, 2" lift and 32x15 BFG MT tires.