Quaker, the makers of Slick 50, were the subject of a consumer class action lawsuit for making false advertising claims, as well as an action by the Federal Trade Commission.
DuPont the makers of teflon stated, "Teflon is not useful as an ingredient in oil additives or oils used for internal combustion engines."
Better to spend your cash on a quality oil, rather than bogus additives. I am surprised they still sell this stuff after settling the lawsuit.
http://skepdic.com/slick50.html
http://www.ftc.gov/opa/1997/07/slick.shtm
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