Re: Do you count your first tank?
I counted mine. It's part of real-world testing, and I don't think we should tamper with data to skew the mileage figures upward. When you have numerous tanks under your belt, the first tank, if low, won't make much difference in your lifetime average. However, you might always think you're "cheating" just a little bit if you don't include it. If you were to consider that the mileage database is only a historical record with no inherent meaning, and with no one to impress by your good mileage, there would be no reason to exclude your first tank. That way, you have ALL the information at hand.
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