miles per gallon reset trip odometer, fill truck up, drive as long as you want (preferably in the interstate). fill truck up again and then take the miles and divide them by the gallons. that is miles per gallon....nhraracer90;1609418; said:I dont really have a heavy foot. How do I hand calculate my fuel mileage?
Just filled up my tank with 612 miles on the one tank. It took 30.22 gallons to the top, which works out to 20.25 mpg. The DIC said I used only 25.9 gallons and got 23.6 mpg. So miny DIC is too high by about 3 mpg.alleghenyrose;1607276; said:Now, I admit that I have the smaller version, ie not a dually, but I just did the above on my 2500, drove 270 miles from Leonardtown, MD to Virginia Tech in Blacksburg VA, and then returned home. I put 540 miles on it over the weekend, and 10 miles yesterday for 550 miles without adding fuel.
The fuel gauge is still above 1/4 tank, and I will get over 600 miles on this tank of diesel. If I went down and filled it right now, it would probably take 28 gallons, but that's a guess. 550miles/28g is 19.6 mpg. My DIC says I got 22.9 mpg. I think it is close, but on high side