Manitou
Tree Service
I believe the marine STABIL(blue stuff) does the same in fuel. I started using it years ago for 2-stroke outboards. I even quit fogging the outboards for storage; spring time, they fire up like they were just running yesterday. I starting using in my chainsaw fuel-and same result.So far (knock on my wooden head) I have not experienced any problems. I think the key in the synthetic oil. My theory is that it coats and lubricates the saws fuel system. Even if the fuel evaporates, the oil remains. Just a theory and I do like to run a few experiments from time to time.