Huh? You mean Ethanol right?
If so I've run Ethanol in my K series, in my T series engines and my 18RG series.
It didn't like it to much in the 18RG, but the 2TG loved it :D Made it rev even more happier (not saying its a proven formula or anything, just what I experienced personally).
Their all older engines, so I can't see why it would be a big problem.
I'm no expert on different fuels though, so I could be wrong :P