Well, here's the "THANG". TONS of people DO NOT know how to measure mileage. MPG is an AVERAGE of MANY tanks full. It is NOT a "ONE TIME" thing. You cannot just measure mileage on one tank and say "I get XX mileage". AIN'T how it works. NEVER has been. Also TONS of people "JUST SLAP" don't know how to add or subtract, either.
Just look at some of these new fangled modern jobs that display live MPG on the dash. I have "SEEN" dash displays show 90 plus MPG, downhill, coasting with no accelerator involved. That doesn't mean you're "gettin" 90 plus MPG. That's not how it works.
A LOT of people are just "SLAM IGNORANT" about how to go about figuring mileage and always will be. You caint tell them anything.
