The advantages of the non ethanol are it stores better, leaves less residue when it evaporates in a carburetor during storage, and is not as degrading to fuel lines, diaphragms, and internal carb parts.
The disadvantage, the ethanol has the same effect as raising the octane of the fuel.
As for needing high octane non ethanol, the tractor and garden tractors are low compression and will run just as well on low octane gas. Running high octane when not needed will increase carbon deposits, and increase operating cost due to higher prices.
The 2 cycle will like the high octane. But weed wackers and leaf blowers are rarely operated at full power (the blower is governed by exhaust restriction, so never actually reached full potential). Chain saws, other 2 cycle applications that see extended full power, lugging, hard use, do need higher octane fuel. Following the oil ratio exactly, and using factory or high quality oil is also critical.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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