On a few of them the corrosion had set in so bad that the pins on some of the ics just fell off as soon as I removed them from their sockets.
Yep, guess the brush job is out.
electronic rust prevention for cars is hoax
After looking this up (never heard of it for cars) I will agree with that statement.
Ask you friend to tell you about the real uses of Cathodic Protection. It is as real as electroplating.