Mark Zenier wrote:
In article ,
Geoffrey S. Mendelson wrote:
Jeff Liebermann wrote:
Left alone, the base metal will rust
or corrode. I smear on some grease to slow down the corrosion, but
find that it's not really adequate. I wouldn't mind painting the
contacts with clear acrylic after masking the contact area, but that's
often difficult or awkward to accomplish.

I've had reasonable results using the green anti-oxidant grease to
ressurect some old metal flashlights that got seriously crudded up.
I think it's original use is for copper-aluminium connections.

...

If you are in the EU, you can buy a better cleaner called Cramolin, which
used to be sold by the people who sell DeOxit. Post 9/11 the Cramolin
products can not be shipped by air in the US, so DeOxit was created by
their US distributor to fill the gap.

Urban Legend Alert!

I sure as hell wouldn't try carrying it in my luggage, but I've got
an old posting somewhere in my archive from some salesman at Cramonlin,
(made long before 9/11), that they broke off the distribution deal because
the American distributor was claiming they invented it. (There was also
some reformulation going on around that time for the spray can versions,
due to the Freon ban).

"Real" Cramolin is the factory recommended treatment for connection
problems with engine control computers for various German made cars.
"Recommended" might be too weak, more like "Only method allowed".
Try the parts department at your local VW or Beemer dealer.

Not sure it's related, but german vehicles seem to have plenty of
electrical problems, ranging from harness fires to simple stuff
like headlight connectors burning out. They just don't get it.

I'd steer clear away from anything german+automotive+electrical.