With Teflon. Protects against friction and heat. Slick 50 supposedly reduce engine wear and increase fuel efficiency. Multiple tests by independent laboratories have shown that when properly applied to an automotive engine, Slick 50 Engine Formula reduces wear on engine parts. Test results have shown that Slick 50 treated engines sustained 50 percent less wear than test engines run with premium motor oil alone. Just fill in with the next oil change. Good for 80.000 Km. 1 bottle of 0,946L