I'm glad to see you're headed in the right direction, and I know from personal experience that the SGII is an effective coach and that driving style has a big impact on fuel economy.
However, your sample size is too small to draw firm conclusions. You've had blips in your fuel log before, and if last year is an indication, you're about to return to your summer gas mileage. Can you rule out warmer weather and summer gas as the reason for your good tank?
Still, congrats.
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