after reading a post by Trnsfmr about Corrosion X I bought some and it did indeed give the results I'd been looking for ie no more recurring dropped channel problems a few weeks/months after DeOxit cleaning. I was that impressed that I gave it a try on my Volvo headlight wipers which have been problematic since the car was new with frozen hinges. Just gave the car it's post winter wash today and the wipers are fine about a year after treatment. How about that for a test?