Ac that public school will do it to ya every time won't it?
I would believe 12 mpg from big tires and lots of gear changing.8 mpgwould have black smoke trailing behind you.. and prolly lights blinking all over your instrument cluster.
Why not give your next tank a try and get a calculator you can take with you to the gas station?
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />

professional bovine relocation specialist