Thanks for the info. For more details on the TerraClean product/treatment, it is a highly distilled gasoline(??) derivative with all additives removed and oxygen added. Therefore it is an 'enriched' pure fuel. It must be applied by a mechanic. It is not a doityourself treatment. The mechanic taps into the car's fuel delivery system and the Terraclean distillate is electrically charged in a pressurized cylinder and then metered into the engine over a 30 minute period while it is running. Independent tests show emissions decline after the treatment. Unburnt hydrocarbons down by 70% and CO level down 40%. Since a licensed mechanic is doing the work the risk lvel must be reasonable. I have not heard of anything else like this.
