right but that wouldnt change the amount of fuel consumed is what im saying.

 

it doesn't change the amount of fuel consumed. BUT if the "gallon" contains more volume (160 oz versus 128 oz) then you'll go further on a "gallon" and you MPG will be higher if you use an Imperial gallon.

 

I am currently running 4.56 gears in my dodge and love them I have two sets of tires by off road tires witch are 33x12.5 15s and my towing tires are 265/75r 16s running the 16s my average driving I get about 11.5 mpg and towing I get 11.2 and by towing I mean loaded car trailer. If I run interstate or pure highway I can get 15 or 16mpg but then again what can I expect when at 60 mph I am turning around 2200 rpms and somewere around 70 I am close to 3000 rpms. Again I tow alot and the 3.55 I could barely take off when I hauled the tractor on the trailer now with the 4.56's I think I could pull over a house with out a problem hahaha