Originally Posted by TrackRat
Mobil 1 is a Euro oil product that Mobil U.S. has to pay rights to sell in North America. As originally stated above, it is a different formulation from the U.S. Mobil 1 oils. It is the only Mobil oil sold in the U.S. that meets the BMW LL-01 specs.
Only mobil oil that's been through ll-01 certification.
amsoil is a great example, which has oils that exceed the certification requirements, but they just don't have certifications. Their products simply state which specs the oil is compatible with.
Not every company feels good paying a 'nanny tax' to a private regulatory body - which is in no way empowered to regulate anything. Especially when it's 300'000 usd per cert + you're locked into your suppliers.