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 - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
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