LOL wonder cleaners is right. Just as good as volcano insurance in florida LOL! I guess the only one i've heard that works worth while is seafoam treatments. Other than that, I think taking it apart is the best resolution. Until shell releases more info about this mystery gas, everyone is in the dark and will make their own guess. Most say its a scam, so until shell proves us wrong--- i'm not putting that stuff in my tank. I need more info about it first, not jumping in with both feet. Just too many unknowns to gamble with my engine, what about yours?