KTA wrote:I write my fuel stops in a logbook. When I fill up I note the mileage and how many gallons. By doing this I can average fuel mileages for months or years, all I have to do is add up the miles and the gallons used for that time period and divide it out to get my mileage.
Thats what I do but my speedo is off by 5mph so my mileage is off a liitle too. I'm going slower than what it says, so that means I'm not traveling as far which means my mileage is actually a little worse than what i calculate.