There is a Yahoo group at: https://groups.yahoo.com/neo/groups/Thermasan_owners_forum/info and the manuals are on Billy's site.
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Just my opinion (not wanting to battle the EPA). The "Aqua-Kem" probably hasn't changed since it was first made and used with the Thermasan. It's primary components are Formaldehyde and Methanol, both of which would incinerate at exhaust temperatures leaving behind CO2 and water with a trace of CO. Both of these chemicals can be found in Gasoline.