Re: Sea Foam?
If it's a china girl there isn't really any build up that would be causing any loss of performance. In fact the carbon build up which would be on the piston would increase compression. So it's essentially useless on a china girl. A 4 stroke which you mentioned would be a whole different ball park because of the valves probably for build-up. You shouldn't have to worry about any of that on these 2 strokes.