Dielectric grease for 30 amp plug and receptacle?

Thanks again for the DeOxit tip. I sure miss having a Radio Shack nearby, they probably carried it. As silly as it sounds, I wish I had a 30 amp female to 30 amp male connector to insert between my trailer plug and the campground receptacle. I always insert a 50-30 adapter when 50 is available. Some of these thirty amp pedestals are in their thirtieth year of abuse.