Boat has been sitting for 2+ years with a tank full of gas. I put some in a glass it looked clean. I was wondering if gas looses it ability to fire if its old??
If you are putting it into a Chrysler or Force---Just burn it! They are remarkably tolerant engines. I have burned fuel that was at least 5 years old and smelled like varnish rather than gasoline. It was all the same to the engine. Ran quite happily. Still worried? mix it with some fresh fuel.
I would just be sure to have a fuel/water seperator on it. From sitting so long there is a good chance that the fuel tank may have gotten some condensation in it. And no matter how tolerant no motor burns water!