I used Amsoil 5w40, which does meet LL01 spec and is pretty common. Mobil 1 has been falling out of favor lately, and my last oil analysis w/Blackstone with Mobil 1 0w40 a few years back wasn't the best. I switched to 5w40 Amsoil in my old 99 Saab 9-3 Viggen and was impressed, so given that it meets BMW's spec I'll continue to use it here.
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