what is flex fuel on a jeep?
The Consumer Guide to E85 Ethanol Vehicles GM identifies its E85 ethanol flex-fuel vehicles with Flex Fuel E85 badges and yellow fuel-filler caps. Ford labels its E85 ethanol flex-fuel models with a tree-and-road logo and a decal reading FFV, for Flexible Fuel Vehicle. The Chryslers, Dodges, and Jeeps display a silver Flex Fuel E85 tag. E85 ethanol flex-fuel vehicles from Mercedes-Benz and Nissan do not carry any special identification.