well, i drove my jeep from murfreesboro, tn to hartsville, indiana and back on one 17 gallon tank! it's roughly a 600 mile round trip, and i drafted 18 wheelers some, and topped off the tank every time it got down to 3/4 of a tank. i only had to top it off 4 times, hence one tank. i'm still driving on gas i got in indiana!:scared: i'm sittin at ~4" of lift, 30" bfg mall-terrains, 3.55 gears, and renix 4.0, and aw4/np242. the jeep was sittin at just under 285,000 when i parked it. i'm rather satisfied!:cheers: