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.
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.)
Carbon build up issue yes or no?