Electronic Corrosion Protection

these systems are very problematic in an automotive application.

the electrical potential varies through out the car's interconnected componentry and the amont of 'protection' varies with it. too much localized, impressed current can actually drive the corrosion rather than prevent it. back down the current & the rest of the car goes unprotected.

the process works GREAT to protect pipelines & offshore structures - but both are electrically uniform structures in a uniform matrix (soil or salt water). our folks go to great length to monitor the impressed current levels to keep it correct - not too much & not too little.

Undercoating also has its own suite of problems like peeling and entrapment of moisture. I use LPS3 every few years on my truck here in Alaska (salt & mush covered roads for much of the year). It seems to work pretty well - but only for a few years.

Good luck,
Vince