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something odd happened recently. when i purchased my wheels, it was within 600-800 miles of my next oil change. well i did my oil change last week. now the gas mileage is fine? i am averaging around 80 miles per quarter tank instead of 50. maybe it was my oil this whole time. strange stuff! this is city/hwy combo driving miles.
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2007 GMC Yukon Denali XL aka "The Tank"
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