We see Sea Foam alot in the marine industry and it is some hardcore liquid. If you look at a MSDS sheet, you'll see that there is a touch of nitro in it. For you guys looking for a great decarbonizer, try Yamaha ring free plus. It works great as a preventative and as a shock treatment. The plus is it actually coats the inside of your fuel system to protect from that nice white chalky build up you get from ethanol.