yeah the lie o meter dont work, ive seen it come close once or twice but never on. Hand calcutated at the pump is the only way and even then you have to fill to the brim everytime and also have to make sure your speedo is dead on. my truck is gettin bout 19 now round here and i think thats real good. but i do baby it a lot at lights and stop sighns
2000 f250 ECSB Dually 4.10s 305/70/16, 4x4 7.3 zf6 200k miles
Php hydra chip PHP tuned! 4" exhaust, stock turbo(ww2, turbomaster wastage actuator, gutted ebpv), FRX, 160/30 sticks SB 1939-CB single clutch, home brew water setup for when i'm pulling hay through the mountains.