The praise of Seafoam is such that I now take two teaspoons each morning and I am very regular! That aside i did thinking what is good for the goose is good for the gander and I ran it concentrated through my Saabs fuel tank at 160,000 its a 95. That electric fuel pump crapped out. I have seen articles about putting a can of it into a one gallon mix and running it through the fuel lines while operating and kicking up a smoke cloud. Would this too possibly clean to much or hurt any parts? It is a Johnson 225 VRO. Gary