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Excessive soot accumulating around exhaust
I've got a 2011 X5 50i with the M performance package. I saw an earlier thread about possible leaky injectors but my dealer says this is normal. The only way to get the crap off is to use a mild buffing compound or clay bar it for a few hours. Wondered if anyone has discover more facts on where I can direct my dealer that there 'is' a problem?
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BMW CCA: 501218
Current owned:
2018 540xi MSport
Previously owned:
2015 650xi Gran Coupe MSport
2011 X5 50xi MSport
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