Thanks. I'm aware of E85, and assume, when it arrives, that we will not be able to use it in our existing engines. I believe the high concentration in E85 corrodes injectors and other metallic elements. But somewhere I read or heard that ethanol, in what mixture I'm not sure, eats away at rubber seals, and that's the reason for my question.

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Sageriders
2011 328, Water [blue], Saddle
2006 X5 4.4i, Sterling Grey/Truffle, Premium, Sport, Cold, Rear, Adj. Ride Ht.
2005 X5 3.0, Sterling Grey/Black, Sport(Totalled!)
2002 330i, Grey-Green Met/Truffle Br. [Sold]