My mechanic recommends putting in 100 octane fuel when I put the car away for the winter. He contends that's better than any of the gas treatments. It'll start right up in the spring. He puts that in any gas engines that he stores over the winter. I can get it at one local station here. The only problem is it's $ 7.00 a gallon !
Where do you get it? Back 50+ years ago when ga was really gas and not something concocted by a corn farmer with a degree in chemistry 101 or 102 octane was available and I ran all my bikes on it as well as my sports cars.