a couple of years ago when it first showed up here gas was $4, & i decided i could screw the gas man out of thousands a year if i could get my ford van to run on anyting else. it's been in california for years. but just got over to the east coast... those guys with 1000 hp rabbits are having better luck than with C16 race fuel. it's been greatly debated & widely understood that it's not actually green to anyting, considering all the processing to make it. but it is awesome race fuel !! it's an alternative fuel, not a replacement for gasoline. it usually takes up the mid octane spot on the pumps. it seems that since 1986, govt law has been that all US gasoline has e10 btw. just some fyi from my experiences. all fuel system components in any thing after 1986 are e85 friendly. although without 30% increase in fuel, it wont run. as far as how bad it eats rubber & the whole thing not since 86, although i've seen it chew right through a lawnmower fuel line, i dont think was that old. replace hose & go on.