It's not the ingredients I'm trying to match, it's the thickness and adhesion I'm after. Of course, I'd like it to look like an automotive undercoating, but I don't need the actual stuff they used. John I'll check out restore rick thanks. Jcc, I swear they used to put asbestos in everything lol.
I would like to know though, what the stuff they used in the 70's was made of and how it was applied. My guess is its similar to asphalt and was applied hot?
I've always heard and knew that every factory did things differently. I don't know if there was a "standard" as for undercoating. With that, the majority of people claim undercoating was mainly left for the dealerships to apply but not always
