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      10-23-2012, 08:56 PM   #24
duramax
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Drives: 2011 335D
Join Date: Sep 2011
Location: Kansas City, MO

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Took mine in for the first oil change and had the software updated as well, they said it would take 5 hours. I had it done. I am on the first tank since but I have been tracking mileage since new, so I will see if it effects it. So far I am -1mpg, but it has been windy. We'll see.