Originally Posted By: DirkDiggler
Plus, if they require (not suggest but actually require) LL-01, I suspect there is a Magnuson-Moss issue.
There isn't. There would only be an MM issue if the only available LL-01 oil was sold solely by BMW. But that's not the case. BMW does not require you to use their oil. They just require any oil meeting a certain performance spec (LL-01), and there are many such oils readily available. Most car companies have their own performance specs nowadays - take dexos1 for example. None of that causes an issue with Magnusson-Moss.
By the way, here's the official BMW TIS oil spec chart by engine type. Your engine is N62...
Anyway, as I wrote initially, Napa Syn will probably be OK; however, the difference in performance between API SN and LL-01 is significant:
Plus, if they require (not suggest but actually require) LL-01, I suspect there is a Magnuson-Moss issue.
There isn't. There would only be an MM issue if the only available LL-01 oil was sold solely by BMW. But that's not the case. BMW does not require you to use their oil. They just require any oil meeting a certain performance spec (LL-01), and there are many such oils readily available. Most car companies have their own performance specs nowadays - take dexos1 for example. None of that causes an issue with Magnusson-Moss.
By the way, here's the official BMW TIS oil spec chart by engine type. Your engine is N62...
Anyway, as I wrote initially, Napa Syn will probably be OK; however, the difference in performance between API SN and LL-01 is significant: