I used Maxima's SuperM and Tundra formula 2-cycle lubricants in my tank. Results were promising, but with winter settling in, and cost considerations of today's price gouging gasoline, I put that experiment on hold 'till we see fair weather again.
I used a ounce lube/gallon gasoline ratio, and some said it was too much, others said use more. This made it about 150:1 ratio with the odd size of my tank. No smoke, no smell, but did see improved mileage. This was done with the Ultra in the crankcase as well, so I guess it was like having a double dose of "cleaning" so to speak.
Any comments based on my personal experience are very much so welcomed.