Hi guys I went to our local John Deere dealer yesterday to get some parts and I saw a 5 gallon can with 3 letters on it like sef or something to that efect. I started reading it and it was 5 gallons of 94 octane gas with no ethenol in it as it said ethenol free right on it. I was thinking this would probally eliminate alot of the carb problems we are having in our old tractors at our farm. We usually run 87 octaine will a little higher octaine hurt anything in the old cats or tractors? I forgot to get a price but im going to find out and ill post it here when I find out. Thanks for any input, Jason