Back in the later '70s, one of our vendors got a distributorship for Long Moly Motor Oil. It was made in Louisiana. Something like 10% concentration. It hit the market just after the Teflon additives were taken off the market, back then. He ended up giving it away and using it in his own vehicles. The literature hyped it a good bit, but he had no "Eureka!" comments about how good it was in his vehicles. Be that as it may.
I've got a virgin quart of Arco Graphite motor oil. I also have an opened quart with remnants of the oil in it. Totally black! Soaks into my fingerprints, too! YUK! Hard to get out!
Enjoy!
CBODY67