Damage to the IMS would significantly increase the amount of Fe in the oil; in the case of damage of the main bearings (lead), tin, antimony, copper, cadmium and arsenic will be elevated.
Wait for the analysis and be sure to check the filter, as there will be an increased number of particles there *if* the damage is advanced.
Hopefully, everything together will then give a picture.
And replace your drain plug with the original one, these aluminium versions will not hold 50Nm with the genuine aluminium washer.
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