Inliners International Forums General Discussion Engines Converting a 230 to E85??

I have used E-85 In my AMC for about a year now with no problems.I put five gallons E-85 in with a 20 gallon fill up a few times a year.I run the spark up but make no other changes.Spark knock is gone.Last year they had a one day sale for a few hours to promote the fuel,85 cents a gallon no limit.The only problem i have found is your miles per gallon will fall,and some station owners do not want to sell it for use in an older car.In this area our small mail trucks run on it.