From what I gathered of the OP's "Permatex" reference he might be looking for a product cooling system related shruggy I use Wynn's cooling system cleaner for the flush then the cooling system treatment with new coolant. I've been using it for decades with good results twocents

Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60