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In my newest vintage bike project I do plan on running non corn gas like I have always done in all of my old machines. Fortunately it can be bought about five miles from my abode. The one thing I found interesting is the suggestion of a little 2 cycle oil mixed with the gas for the valves. This suggestion has been made on a number of vintage sites I frequent for British and Japanese machines and I think I am going to give it a try on this one.
I have vintage Triumphs and run them on the non ethanol fuel sold in many stations in my area.. But it's 90 octane so some vintage stuff pings on it unless you make tuning and or engineering changes... I also use the 90 octane non ethanol in my 96 900 Monster and 01 Sportster with no problems. I question exactly what the two stroke oil is supposed to do other than make the rider feel better...???
So why does gas go bad in chain saws and weed eaters?
I just scraped by in organic, but I'd guess loss of volatiles and oxidation.Rich A