I have a Honda 2000 generator that was running very bad. It was suggested that the gas had gone bad and gummed up the carb. I tried fresh gas and 2 other types of fuel system cleaners. No help. Then a friend told me about Star Tron. I tried it. The bottle gave recommended dose,but said it was ok to use more. So I Did, Ran 1 tank thru and yippie the problem was cured! The generators have never run better.I will use Star Tron in all my engines. SUPER stuff!