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Re: Gasoline Additives?
Seafoam is a mixture of isopropanol, light machine oil to relubricate the cylinder walls after the isoprop has stripped them, and naphtha, which is gasoline stock.
So if Seafoam does anything for you, putting in cheap straight isopropanol, which also "binds" water, will do the same thing. There's no magic in Seafoam, you've got all the ingredients at the local hardware store way cheaper.