black sooty tailpipe stains rear bumper
02-24-12, 06:53 AM
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black sooty tailpipe stains rear bumper
I have swabbed all the tailpipes in my parking lot. All residue was light grey or light brown.
My 2010 IS250c has heavy black carbon deposits that wipe out easily with a kleenex. Is carbon a residue from complete fuel combustion or do I have a mixture problem?? Dealer says is normal for IS250c.
My 2010 IS250c has heavy black carbon deposits that wipe out easily with a kleenex. Is carbon a residue from complete fuel combustion or do I have a mixture problem?? Dealer says is normal for IS250c.
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