Talked to a small engine tech of 20+ years. He says the high octane fuels will eventually rob power from the engine. I guess since not all the fuel is burned completely that it leaves carbon deposits in the engine. He says regular fuel is what you should only use and use non-ethanol. He then went on to say that stabil is not necessary in non-ethanol fuel but to use a good fuel cleaner like techtron a couple of times a year.
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