I would assume nothing has been done by the PO, since 1) BMW claims it lifetime fluid, which is BS. 2) it's sold at just passed 100K, which due for a major maintenance job. If I'm the PO, I'd keep it for another 2~3 yrs if throw in a major maintenance job. Just my $.02.
To be 100% safe, follow what mgbmwx5, and the shop procedure.
Quote:
Originally Posted by mgbmwx5
I would just start fresh since you don't know what the PO had done, drop the pan and replace the oil filter with new pan gasket and refill properly.
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01' 3.0i E53 (M54) with 164,000 miles

07' 3.0si E83 (N52) with 134,000 miles

08' 3.0si E70 (N52) with 91,000 miles