Or maybe the carbs in the weed-whackers and saws are better designs than motorcycles. - ??
I have a Sindawa 25 brush cutter, 2 Stihl saws (029 and 170), cheap-a$$ MTD lawnmower, and Generac 3.5K generator. Except for the mower, all are 18 years old and all start with two or three pulls of the string even after sitting all winter. The fuel in the Generac is from 1996, sitting in a damp cold basement and it starts and runs just fine. I don't use tcw-3, but I do use Stabil in the Generac, the Connie and the Wee-Strom.