The metals were clean, though.

Gets the metal nice and clean to help it make better contact.

Also have used this bottle of red to clean other metal to metal contacts

I use this on everything that carries current and is not a precious metal; precious metal I use "Pro-Gold" , including Ethernet/ram/cpu/ballgrid, et

I resorted to using some Peek fine metal polishing cream which worked like a champ in removing the oxidation and leaving the connections with a nice clean and shiny surface.

i took the front cover off and coated the electrical pins then put it back in the truck and it hasn,t stalled since

I use it to clean contacts and prevent corrosion mostly on a variety of electronic connections, as well as on RF connectors like PL259/SO239