So here's the deal. I pulled out my Honda generator the other day. I realized I hadn't put fresh gas in it in 3 years or so. But the last time I gassed it up, I did add Pri--G. So I'm thinking I'm really screwed now after 3 years of no activity. Then I remembered that bottle of Pri-G hidden behind some big bottles and pulled it out. Added the required amount to tank. Stirred it with a clean wooden paint stirring paddle. It it gave me a tussle to get it started, but once it did start, it gradually started running better. By the time I got near the bottom of the tank with the old gas, it sounded pretty good. Refilled it with fresh gas and Pri-G. Pulled some through the carb, and put it away for the next use. Smarter play is to buy the Pri-G for diesel. Exact same formulation as for gasoline, but twice as concentrated, so you only need half as much.