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Old 09-26-2013, 09:09 AM   #46
mp51998

 
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Drives: Black 2011 2SS/RS
Join Date: May 2011
Location: S. Texas
Posts: 1,817
Quote:
Originally Posted by mclark10 View Post
^this. You guys put too much stock in the on board calculator. Record mileage and gallons pumped between tank fulls then use a calculator. Or better yet, Use subtraction and long division with a pencil and paper, lol. Only way to get a true representation. For those who don't know how to do this:
1 Fill tank
2 Write down miles on odometer.
3 Drive till tank is almost empty then fill up again.
4 Record gallons pumped and miles on odometer.
5 Subtract miles from step 2 from miles on step 4.
6 Divide result by gallons pumped. This is as close as you're going to get.
You're welcome

I use an app called Road Trip Lite (free) that does all that for me. I'm sure there are others. Best I've seen is a pretty consistent 24.1 on the way and from Indy and that was this year with the cam.
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