FWIW, I have noticed over the years that we throw around the term Dielectric Grease as a cure all for electrical connections. I remembered from my professional career that some Dielectric/Silicone materials did not meet Mil Spec requirements in a number of electrical situations. I finally found out why, see below.
"Silicone grease should not be applied to (or next to) any switch contact that might experience arcing, as silicone can convert to silicon-carbide under arcing conditions, and accumulation of the silicon-carbide can cause the contacts to prematurely fail. (British Telecom had this problem in the 1970s when silicone Symel® sleeving was used in telephone exchanges. Vapour from the sleeving migrated to relay contacts and the resultant silicon-carbide caused intermittent connection.)"
This is an excerpt from Wikipedia, Silicone grease - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Silicone_grease).
This is not a big deal but I thought maybe other "Inquiring Minds" would like to know.
Reason for inspecting/cleaning contacts and other points where corrosion may occur and silicone/dielectric grease are used. I use it in the area where the isolator and solenoids due to their location behind the rear driver side duallies.