Electronic Rust Protection for Car

Is this system Cathodic Protection?

If yes, these guys (The Corrosion Doctors) have an opinion on how it works:

"Cathodic Protection, which is the real name of the technique these profiteers are trying to sell you, has been used with success to protect against corrosion on many structures and systems including sea going ships, buried pipelines, and even reinforced concrete. However, there is an area where the technique has no chance to work ... the protection of cars. Human nature being what it is, many entrepreneurs have tried to use the visible successes of CP to make money by offering car owners devices to achieve such protection. They typically offer these snake oil devices at a price that could be reasonable if it did indeed work. In reality, the gizmos they offer are a lost in the suckers pocket and a gain in the entrepreneur crooks bank account. And watch out, they will disguise the same old gadgets with new patents and glitzy technical names, even throwing in a microprocessor!!"

Thanks, but how come the popular can dealer such as Ford, Mazda, Nissan... offer it to their customer with a written garantee of ten years. The module their offer has two units one in the front engine compartment and the other install in the trunk of the car.

Hmmmm.

It sound like a convincing way to get another $500.00 out of you.

How long will the rust warranty be without this miracle device?

I find nothing at the Ford site about it. A broad internet search only reveals aftermarket devices. Is this something a dealer is installing, or is this available from the factory?

The dealer just sells cars they are not Ford, Mazda or Nissan. The Guarantee is from the manufacture of the device. He's got your money and most likely will not be in business next week let alone 10 years.

In order for it to work current has to flow through out the surface metal of the car. That means placing anodes all over it just not a couple in the trunk.

There is only one method that car manufactures offer. That's a complete zinc plating of all the metal of the car before painting.

If you want it to work I recommend you park the car in your pool.

They don't work on a car. They only work on left handed smoke shifters. The only thing that works on a car is two sided snake oil.

Was it a device similar to this?

http://cr4.globalspec.com/thread/17167/Rust-Proofing-With-a-Difference

This really sounds like an aftermarket fitted device, I am not aware of any such devices reputable car manufacturers are fitting to their cars.

Sounds like another scam to me (or at the least a little black box feature supplied to a customer for the purposes of extracting more money out of said customer).

Are you able to supply more details (like a manufacturer or model name on the aftermarket device?).

If you have the option of buying the car without the device do so, although with a stunt like this I would suspect the car dealership and try buying elsewhere. Are they selling mothball fuel additives also?