E46Fanatics - View Single Post - Used oil analysis from Blackstone Labs - BMW 5w-30
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Old 06-24-2009, 06:18 PM   #15
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Join Date: Oct 2004
Location: Now in beautiful Simpsonville SC
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Looks good so far. One thing to keep in mind is that if you do an analysis right after changing to M1, there will be a residual effect from the BMW oil. Best to do a complete interval with the M1 before having it analyzed (second interval with M1) so it doesn't skew any results. Changing to different oils with differing basestocks, additives etc, can cause a cleaning of residual metals and dirt that could be misinterpreted as abnormal wear or oil incompatibility. Best to give it a chance to settle in before doing another UOA.

BTW, do you live near the ocean?
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