I have been starting to use E85 too on my VW Golf. It should save about 20€ per tank
At first i tried blending slowly, until all i got is 100% E85 in tank. It works flawlessly. No problems so far, and been running maybe 600km with pure E85. So no trustworthy MPG results so far
Yesterday i installed the
Bioadapter, to make sure my car starts in low temperatures. It does'nt actually need the flexfuel adapter, but winter maybe requires.
Funny thing, before i installed it, the lambda meter displayed normal jumpy readings, and after i installed it, it displays it's running big part of the time in lean, and does'nt jump around almost at all. When it jumps, it jumps around lean, while previously it jumped around lean and rich.