Hey Myt
I have No clue if it works but you can google it and get Lotsa reviews, about 1/2 & 1/2 pro - con.. Here's one of many..
seafoam reviews - Google Search
According to the Seafoam site it contains -----
Pale Oil ----- which is just one of Many synomyms of a Heavy Paraffinic
Solvent found in Quaker, Wal-Mart, Havoline, Valvoline etc. motor oils, Anti-Seize, almost all STP gas, oil and injector treatments, Paints, Furniture polish, Nutragena SunBlock, Hair products and literally about 50 other things..
Naptha ---- Just a simple Hydrotreated Light Petroleum
and
ISA ---- this is precious,, it's just Isoproply Alchohol - 2 Proponol
Ooh yeah--- Have a ball