I just got around to reading the Mobil 1 Q&A. Well---there's 30 minutes I'll never get back. A lot of 'Q' and a little light on the 'A'. It had sort of a corporate legalese condescending tone to it. The 'answer' to the many high iron UOA Q's lumped in to one 'A' was hysterical---it's not the oil, it's your motor, stupid. And LOTS and LOTS of ...has been tested...high levels of protection...meets or exceeds...factory fill...proprietary... If I wanted to hear that, I would just read the bottle or have gone to the MFGR website. The funny thing is that all the really good questions were written with anticipation that there would actually be real answers. Overall, not very informational, just a waste of time. And I still don't know why there's all that iron in the UOAs