Quote:
Originally Posted by skysurfer_535i
I've been running 50/50 - 91/E85 for over 40K
NO Issues, NO Codes
My car LOVES this stuff
E85 FTW !!
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How are you mixing? Just filling up 1/2 way with 91 + the other 1/2 with E85? Or are you actually measuring it out to make sure you have a consistent 50:50 blend?
Quote:
Originally Posted by roundel335
Yes, but the fact remains that our E9x series cars are not equipped to use anything more than the ethanol content in "normal" gasoline - the owner's manual specifically states this. Our cars are not "flex-fuel" vehicles equipped with the necessary parts to resist the corrosive effects ethanol has on rubber and other items. Using high percentages of ethanol could result in warranty denial if problems arise, but again - anyone is free to use whatever fuel they want to put in their cars, but they need to understand the implications and possible negative effects.
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So don't run straight E85
Running a 50:50 blend or anything lower gives you all the benefits of running E85 (less expensive the race gas, quality octane bump, prevents knock/timing corrections) without the major risks (fuel injector flow issues, HPFP/LPFP abuse, etc).