Hello experts, in order to learn more about the health of my engine, I have now done a motor oil analysis twice. Above all, the increased iron content jumps into the eye. Last year it was 93 mg/kg, this year already 288 mg/kg This is probably a sign of wear. Do I have to worry about that? Where is the limit value from which the oil should be changed more often? With me it was always 12-15 months and 15,000 km. And finally: Does the OM605.960 in the oil tank e in magnets that hold the iron particles and thus prevent worse? Or would you recommend a magnetic draining screw and/or an additional magnet in the prefilter? Thank you for every helpful hint! Always enough iron in the blood, but not in the oil, wishes you Stefan