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      05-07-2012, 11:42 AM   #104
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Drives: E90 Interlagos Blue/Black
Join Date: Oct 2008
Location: Madison, WI

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Originally Posted by FifthStreetz View Post
what kind of bearing material was showing in the reports?
Lead. It jumped from 10 ppm to 17 and then to 18. The last test had 5800 miles on the oil. Here is what the Blackstone folks had to say:

JAMES: We were looking for an improvement in lead, but alas that did not happen this time. In fact it increased a bit. All other wear metals read about the same, so no other issues are developing. This reading of 18 ppm is higher than we'd like to see, and something we'll watch closely next time. We suggest monitoring your oil pressure to make sure there is no drop. We also recommend resampling in just 4,000 miles next time. Hopefully lead will settle back down. The oil was again in good physical shape. Check back to watch lead wear.