Hey there. I use Sea Foam in my rig (90HP Yahmaha). If you search the iboats forums, you will see LOTS of info on it. I've used it on my wife's Tahoe and my Durango too, with GREAT results. This stuff is liquid gold. You can go crazy with it for a cleaning (soak carb parts etc during a carb rebuild), spray it directly into the carb, or just add it to fuel as an additive. I can't say enough good stuff about it. You can get it locally at Northern Tool or AutoZone, or you can find it here on iboats at http://www.iboats.com/Marine_Store/dm/keywords.SF-16
