Dielectric Grease
Most of the time if you use the stuff that is clear it wont harden up and become flaky (white stuff does)...I have some stuff thats aviation grade and that stuff is great i went through and redid most of my connectors in the engine bay..except the cap, but i dont see where it would hurt anything, after all it is conductive and seals out moisture
dielectric grease is a clear compound. if your buying something and its white, its not dielectric grease


