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
Think that fuel mileage is measured more correctly against odometer readings which can be verified pretty close with GPS, rather than calculating mileage by speedometer readings.
