Originally Posted By: Mystic
Check the FTC website someday. Several companies that made various oil additives and supplements were fined by the FTC. You will find some names you probably know.
Only maker of a additive that contains PTFE that never made the list as far as I know was the company that makes Tufoil. They were never fined apparently. Does that mean their product is safe? I don't know. Does that mean they are too small and fit under the radar? I don't know.
What you can do is buy a motor oil that has a lot of moly in it-like Redline. Moly in the correct chemical composition is already in the oil. Makes sense to me.
I have successfully used Tufoil for some years now in both my cars (BMW520 and Ford Mondeo 2.0, European -95 models. Both cars has gone just under 200 000 Km). In Tufoil there are some very small particle sized PTFE (and moly) as I have seen on the Tufoil home page.
At this excellent forum there are a lot of sceptics regarding oil additives which contain PTFE as I have experienced earlier.
On my BMW the oil filter are of the canister type, I can then easily check the oil filter visually for particles/clogging/. My oil filter locks very good (no clogging) when I replace it at each oil shift.
Regarding particle size, I think even moly is “dangerous” in motor oil if the particle size is large enough. I believe particle size matter.
I have also earlier done a Auto RX treatment on my BMW. I then regularly checked the oil filter during the clean and rinse cycles but the filter was not dirtier than earlier when I had used only tufoil. May be that the Tufoil had cleaned the engine prior to this Auto RX treatment?
Now I only use Tufoil in my cars (and in the lawn cutter and snow blower)