BMW Techs, Done Walnut Blasting on B58s Yet?

[parteevpatil]

This is a question for the BMW techs on this board, have you guys had to do any walnut blasts for carbon deposits on any B58 engines yet? If so, what mileage were they at and how bad were the deposits?

I'm at 38k, had this thing since new and treat it well, so hopefully it won't be needed for awhile yet, but I'm just curious if I should prepare myself for one in the future.



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[pbondar]

Since this was BMWs second attempt at reducing inlet port coking I assume they’d cracked it and they wouldn’t need much love before at least 100k..my theory anyway..