I have run 3oz/Gallon (around 40/1) for the last 40 years. I have never experienced an engine failure due to insufficient lubrication, and only fouled the plug maybe a handful of times in a quarter million miles. I use Regular from the pump, ethanol or not. I use synthetic 2 stroke from Walmart when they have it, regular 2 stroke when they dont. Don't overthink this. The stuff you see on here about all the fancy oils and lean mixtures are just the folks trying to get motorcycle speeds out of a moped and are pushing the envelope as far as possible.