I don't know..... I've been running E10 in everything I own for close to 30 years as that's pretty much all we have at every station in "regular" grade. The only problem I ever had was fuel line in a chainsaw going mushy. And that was after 5 years and 30+ cords. No other piece of equipment has ever had a fuel related problem. Lawnmowers, weed eaters, tillers, my PT425 for 14 years, cars, trucks, snowblowers, etc... and the only piece of equipment that I ever drain is the chainsaw! The only piece of equipment I put stabilizer in is the gas powered generator. Other than that, nothing gets treatment. Nothing gets drained. Nothing get ran dry after use except the chainsaw, which had one mushy fuel line.
Here's something else... I have only maybe twice had to adjust carbs on machinery. They just plain keep on running fine. I often wonder, after witnessing many people that purport carb and fuel problems, if they are not self induced by messing with things that don't need messing with? Most of my machinery has the original spark plugs, for that matter. Maybe I'm just very fortunate and have good luck?
But I just cannot see paying double and triple for gas in a can VS just buying pump gas and rotating the stock at home on a regular basis. I have three 6 gallon cans. So 18 gallons. I fill them about 5 times per year, so I go through about 90 gallons of fuel between my saw, mower, weedeater, log splitter, tiller and tractor. One fuel problem in 30 years of owning my own home and the associated gas powered tools all running E10. And I know of no one else in my family or friends that has fuel related problems. Is it a regional problem, perhaps? :confused3: