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Old 11-19-2009, 11:40 PM   #16 (permalink)
Matt
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Join Date: Oct 2009
Location: Augusta, GA
Age: 41
Posts: 1,680
Drives: 2010 Avalanche LT
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I fill it up every time I pass my Shell station, which is about once every 10 days. I don't count mileage, and I leave my display on "outside temperature" because the first week it was always showing an average of 15.5 mpg, haha!

Honestly, the last week I've averaged over 18...so I think it's starting to get a little better, plus I had the HFC's installed. So that puts me at around 340 miles per tank.
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