Glad to hear the engine appears to be OK.

Do you make many short trips that don't allow the engine to fully warm up? Any condensate (cream coloured paste) ever visible under the oil filler cap? If so, it is worth putting the oil separator and lines on your annual maintenance checklist. It is a lot cheaper than repairing damaged engines.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue