How many of you have heard of PTFE or seen it in oil addatives? Dupont is the exclusive manufacuter of PTFE (industrially known as Teflon). You are probablly thinking YAY TEFLON is good in my motor since is has a good reputation of being very resistant to friction and tolerating high heat. But before you go out and buy it, there are a few things you should know. The reason why they label it PTFE instead of Teflon is because Dupont does not approve Teflon for use in internal combustion engines. Due to the wide demand and no test results to show that Teflon harms an engine per say, the government (don't we all love them) forced dupont to make it avalible to oil companies. Dupont does not allow them to lable their products to contain teflon therefore using PTFE as it's alternate name. When it is put into an addative, it is pretty much small solid molecules of teflon suspended in oil. In certain applications it does reduce friction and is benificial. But over time teflon will clog oil fliters, oil passageways, oil pumps, and even reduce oil pressure. Also Z-Max is another addative I would like to discuss today. Lynkite is very very good. It does everything that it is advertised to do. Do some research, Lynkite was banned by the FAA because it froze at higher altitudes. (It gets colder the further up you go) Unfortunately the genious engineers decided to mix this lynkite with a bunch of solvents to clean the motor. Thefore counteracting the purpose of lynkite and oil. It is such a high detergent, it won't allow the thin film of oil to coat all the moving parts in the engine resulting in metal to metal contact causing more ware. Effectively cleaning all the gaskets and seams, it allows it's gasket conditioner to work wonders. So it's your call, weigh the benifts and the possible failures.