Originally Posted by farmercr
There can be a problem with doing it manually also. Are you sure you are getting a gallon of gas everytime it says on the pump. There was an article that came out in the paper about a year ago ( Fort Worth ) They did a survey on stores around the metroplex that weren't calculated. They found that alot of the pumps were way off.
I find that to be correct.....The only time I have gotten the computer to match my hand calculations,is getting fuel before 6 am when the heat has not played havoc with expansion of the in ground tank and the tank on the truck.
I got 18.6 MPG's doing 75mph avg on the way back from Indiana this past weekend.