I would put old gas in a vehicle, not sure about the two stroke mix. Have heard a some bad things about that.

I put Stabil into my gas when I buy a gallon for yard work. But I found to my shock, that a stored pickup that had not been started for eight years, started and ran rough with eight year old gasoline! It ran rough, but it not even had the benefit of Stabil! I did not expect the truck to even start with eight year old gas.