SEAFOAM is some of my favorite stuff. The problem with it is it almost works to good. You can put it in your gas, oil, carbs, vacuum lines. I like to put it into the line coming off the brake boaster.
PS just a little story. I man I use to go wheeling with as me about it and wanted some help. He bought a 1gal can of it and we put it in everything. Man what a differences. About 2 days later he called and said something was wrong and his truck wasn't run very good. Come to find out he had some rust in his gas tank. The sea foam picked it up witch clogged the fuel filter. It was a simple filter change and all was good.