Exactly what Mustang said. I have run ethanol gas in mine for 5 years now. NO issues. I might point out that ethanol fuels have been widely used in Europe many years before here in the states. Brazil has been using ethanol mixed fuel since the 70's!!!!:eek1 Triumphs are engineered/designed and built where ethanol gas is the norm. Don't ya think they sort of "designed" them to use ethanol? THe tank decals bubble due to expansion and contraction from heat humidity etc. Its annoying, but not a deal breaker. Also not ALL of them do it. Tigers are made to be ridden not pristine show room quality trailer queens. They get scratches and dings...all part of it. By the way......be ready now.......you ARE going to drop it. I said I wouldn't....I did, 3 times now. Low (or no) speed no damage other than scratches....they just like "napping" now and then. Get the Tiger and ride the snot out of it!