On 2 Dec 2006 at 20:09, David C Robie wrote: > That 'vx6' or whatever they call that miracle battery additive now is > just epsom salts. Epsom salts is magnesium sulfate. VX-6 used to be a cadmium sulfate solution. Have they changed it? When I was a pimple face, the local discount store sold this snake oil. So did some of the garages. It came in a little bottle maybe 10 cm tall and cost a few bucks, perhaps $3 or $4, IIRC. It was dyed red. As I understand it, somehow cadmium sulfate binds to the crystalline lead sulfate that won't take part in the charging reaction, and precipitates it out. (No, I don't know how this works.) This doesn't add any real capacity to the battery, but it may temporarily reduce its internal resistance. The usual "proof" that VX-6 worked: turn on your headlights until the battery is dead. Now shut them off, and go pour in your VX-6. Wait a few minutes. Now try to start your car. Presto! Look at all that new energy the VX-6 gave your battery! Of course - as we all know - a "flat" lead battery left to its own devices for a few minutes will "regain" some charge, quite possibly enough to start an ICE. But this "proof" sure made the stuff look good, and gullible customers bought it. David Roden - Akron, Ohio, USA = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to the "etpost" address will not reach me. To send me a private message, please use the address shown at the bottom of this page : http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Republicans have perfectly nice manners, normal hair, pleasant smiles, and good deodorants; but when it comes down to cases, you do not want them to be monitoring your oxygen flow. They will set it to the minimum required to sustain basic brain function, and then they will recite a little prayer for you. -- Garrison Keillor = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ Elec-trak mailing list Elec-trak cosmos phy tufts edu https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak