[mobythevan]

OK, I got spanked. Time for more research/thought. Guino showed same average for last two tanks at 50mpg, also showed same gallons used at 8 gallons. The first tank took 7 gallons to fill at the pump, the second tank took 9 gallons to fill at the pump. I am not seeing how there can be a 2 gallon difference in the pump. Filling location was flat and I ran the pump half speed. I'll just keep averaging tanks and see if I can figure out the 2 gallon mystery.