fuel economy
One item overlooked in computing gas milage is that not all speedometers are accurate. If your speedometer is 5MPH fast at 60mph your miles to gallon is not 10, but9.1 mpg. I have owned 4 motorhomes ...
Forum Discussion
My dash speedometer reads low compared to GPS and Scangauge. I still use the dash readings for fuel mileage. Reason for difference. Changed tires from 225 to 245's. Scangauge shows 20 more miles on a 400 mile run.
