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Old 01-08-2013, 02:25 PM   #14
Doug&Julie
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Join Date: Nov 2012
Drives: 2013 Subaru BRZ
Location: Beaverton, OR
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Reset every tank full, then compare the car's numbers with the math. I also track via an ap on my iPhone.

On long trips, I reset A at each tankful, but leave B for the whole trip.
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Doug
2012 Subaru Impreza 2.0i
1986 Porsche 911
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