Jeff Liebermann wrote:



** The dark coating that forms on silver is *silver sulphate* (aka Ag2S).

I stand half way corrected. Y'er right. Most of the tarnish is
silver sulphide.


** There is simply no silver oxide formed at room temp.



The idea of using oleic acid on electrical contacts worries as it
must become conductive under enough voltage.


What do you mean "must become conductive"? Do you mean that the oleic
acid becomes conductive, or perhaps the contact cleaner?


** I was referring to products that use oleic or any other acid in the mix.

Even the smallest leakage current can be a disaster with electronics - track to track on PBCs or between plate and grid pins of a vacuum tube or its socket.

Products like WD40 are certain to cause no leakage.


..... Phil