[dizman7]

I haven't come across any 93 octane yet where I live (let's not get into 93 vs 91) but I briefly saw on some other forums that there is 93 octane out there that is only that because it's 10% ethonal.

I really don't know much about this stuff (yet, that's why I'm asking) but thought I'd ask just incase I happen to stumble across some, is that bad for an 08 E92 M3? or should I only use "pure" 93 (if I ever found it).