Actually, I was hoping to see an answer.
I had a boat with 12 year old fuel and called all the marine service folks in town.
No one would empty the tank and dispose of the fuel.
I ended up pouring a lot of STA-BIL into the tank and running around the lake until it was down to about 10% of the tank.
Smoke, uh-huh! Probably not too good for the 2-stroke engine.