Quote:
Originally Posted by Wattens
All BMW’s for like the last 20 years or so are ethanol compatible from my understanding.
Give or take a few years or more.
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Definitely not the last 20 years, ethanol additives are relatively recent and fuel systems have not been adapted to handle small amounts of ethanol until recently.
F series and newer you would be ok due to the factory PTFE lined fuel lines, and E series (N54 so '08 and newer) I believe you would be ok too.