The TCW3 is for water cooled engines. For water cooled engines my first choice would be Mercury Premium Plus ( Quicksilver Premium Plus). It protects and burns clean with little smell. My second choice would be Penzoil XLF.
If you have an air cooled 2 stroke I would go to Tractor Supply and get the Alco Smokeless. It is one mix serves all motors for $.97 per gallon. I believe the rating is ISO LEGD. Any of the majors will work (Husqvarna - Stihl - Echo).
I would not use TCW3 in an air cooled motor.