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      12-07-2012, 04:32 PM   #1
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Drives: 2011 335d M-Sport
Join Date: Jun 2012
Location: Toronto, Canada

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Carbon Build Up Stats Thread

With all this talk about the Carbon build up issue, I thought it might useful to gather some data. Whether or not you have experienced this issue or not please contribute. I think these are some of the key factors which are relevant to this issue.

Please state:

Model year
335d or X5d
Mpg (Please use the figure found in your BMW)
Avg speed (Please use the figure found in your BMW)
Brand of fuel (cetane rating if known)
On a scale of 1 to 5 how hard do you drive? (1 meaning: I baby my car, 5 meaning: I drive like I am being chased by Cops.)
Highway/City Mix

Carbon build up issue yes or no?

Additional Info:
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