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Did some more digging and it looks like in order to meet epa guidelines bmw is moving towards lower HSHT values which may improve fuel efficiency but likely at a cost of decreased engine lives. That's why they're abandoning their 5w30 and 40 oils and moving towards the thinner 0w20 and 30 oils... I'm just going to stick with what's been working for bmw engines all these years and that's heavier oils with HSHT numbers in the 3.5 and above range... I wouldn't bother with the "FE" designation as long as it's LL01... I don't even know of any brands available in North America that have the "FE" designation. Pretty sure even the BMW brand oils thus far have not had this and their engines haven't changed and have been doing great on the LL01
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