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Old 03-08-2015, 08:35 PM   #9 (permalink)
Sven7
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Join Date: Aug 2011
Location: Warren, MI
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Boo Radley - '65 Ford F100
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Why not note the amount you spent at the pump on your first full tank entry? Just add in the comment section something like, "I spent $35 on last tank but don't know the mileage." Or, figure out how far that money would have taken you, and adjust your full tank numbers accordingly, neatly squeezing 1-1/2 tanks into one entry. I don't see the need to add more complexity if it's only going to help you for one single (and incomplete) fuel log entry.
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