Is it OK to put E-85 Ethanol in a '01 Audi S4?! I met a couple of guys that tinker with their turbo Saabs a lot and they said they'd been putting E-85 in their cars and performance rocked. I was sorta shocked by the statement and wanted to check if there was any credence to it. Rgs, Aurangzeb -- '01 Audi S4