Needed to go fill up the truck, which is a FFV. At my closest station RUG was $2.53.9 and E85 was $1.45.9. With the $1.08 price differential, the 12% hit in mileage is worth it. So, I went E85. Out of curiosity, for those of you with FFV's,at what price differential to you decide to burn E85 instead of RUG?