Yup, I wouldn't use more than half a bottle w/ a full tank of gas. I've used it for years in my Sea-Doo's. Give the Poo Carbon Clean a try. I don't think you'll notice a difference but it may help keep build up down. If you think your gumming up too much check your oil pump setting. I was talking to my service rep about using carbon clean and they said to use it twice a year w/ the CFI machines.
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