I can't believe this conversation is happening for the ten thousanth time. Use the fingers and the mind, do a searh with keywords like an oil brand name like Bel Ray, Redline, Stihl, MC-1, H1R, Pennzoil, WalMart oil, Echo, oil ratio, octane, best oil, effects of ethanol, and settle back for about a thousand pages of reading. All of the above is a blind re-hash of ancient discussion. You can do the same search on other forums and end up with another thousand pages if you do not find the answers.