There has been much discussion about this, both here and elsewhere on the web. Most are using the TCW-3 oils.
I doubt this is helpful for mileage gains, and only marginally helpful in other aspects, if at all.
To me, this is just a fad that will pass in time. But ya never know, I've been wrong before :)
Do a search for sarge + 2-cycle oil in gas...here, I did it for you.
http://www.google.com/search?hl=en&s...mp;oq=&aqi=