Going back 20 years or so there was quite a bit of talk regarding it’s qualities as a bore treatment often used in handguns specifically to reduce lead fouling from cast bullet loads and it supposedly increased velocity. I fell for the hype and gave it a try. It wasn’t long before I got rid of it or used it up around the garage. As I understand it, it’s basically PTFE (Teflon particles) suspended in an oil matrix. I recall the Teflon content was very high giving the oil a milky white color. It tended to dry up leaving an uneven tenacious white coating behind.