Sea Foam Home Brew (A Link)

I only use high test unleaded in all of my small engines both 4 cycle and 2 cycle, very easy to find in my area. Homebrewing Sounds like a pretty good idea tho.
I agree that 2 cycles are still around and will remain for some time, even our golf cart is 2 cycle, and a couple of old outboard motors ,chain saws, trimmers, post hole diggers, you cannot use 4 cycle in some of the positions a 2 cycle will run because there is no oil sump, and in some cases as in our golf cart it will run in reverse.