Regarding two cycle air cooled power equipment ...
Some of the better specs I can find for two cycle lubes is the JASO FD and ISO L-EGD. Seems that this is designed for air cooled stuff and to help not only run clean, but actually clean up previous deposits.
It's common on some of the brand name products (Echo, Husky, etc; though I cannot find anything on Stihl's lube).
Just about the only source of that kind of lube from a non-OEM is the Mystic JT-4 Lawn and Garden.https://www.mystiklubes.com/do/product/OUTDOOR_POWER/663091002
I'm looking to find competitive pricing options; does anyone know of any other aftermarket lubes that would also meet those specs?