What about the inefficiency of E10 gasoline? Automobiles lose about 3 miles per gallon when using ethanol blended fuel. Ethanol dilutes the oil in the crankcase, makes the engine run hotter and is less efficient than non-ethanol gas. Three good reasons to avoid it!
I prefer to use synthetic oil and non-ethanol gas in my Cubs to increase the efficiency and longevity of my equipment. Why feed your engine "junk food"! If you have non-ethanol gas available, use it. Of course if you like to eat "junk food" and prefer to feed your Cubs "junk food" (gas with ethanol), then do as you must!
After all, this website is all about fixing Cub Cadets...You shouldn't be denied the opportunity to rebuild your engine, as that is part of the fun of owning Cub Cadets!
Merry Christmas! Ho! Ho! Ho!