One of the biggest shipping companies, Frontline, is using PTFE in their engines and hydraulic systems. Several hundreds of shipping companies have started to use it. It is not because they find it funny just to do so, it is because they save money as well as reduced emissions. The type of PTFE they are using, is from a company called QMI. Even though their formula of PTFE isn't as advanced as Synlubes, DNV(Det Norske Veritas) have been testing this product, finding it to do no harm. Also Statoil, one of the worlds biggest oilcompanies, are using QMI. They all have been doing extensive testing of this PTFE product. What makes you think that all the PTFE in this oil will end up in the combustion chamber? In a normal healthy engine, the average oil-consumption of Synlube, is one quart for every 20000 miles. I would classify your writing to be rather hysterical in regards to creating "extremely toxic and corrosive gases". If this was true, none of the above mentioned, would have used it. Mazda in Japan have been selling QMI PTFE engine threatment as OEM for several years. Wonder why? The part number is: 9999 77 6052 E3 . This was a lot about QMI, but I found it to be related, since it is the PTFE you have some perseptions about.
In the rare situation when metal surface is damaged under extreme operation condition and all of the positively charged surface oxide is removed, the fresh metal surface have a negative charge. Before oxidation of this surface can re-occur this would result in increased local wear. To eliminate wear under these rear conditions, the high Graphite colloid loading of the Synlube formula, instantaneously protects such surface. This is because the graphite colloids have positive surface charge and are easily attracted to the metal surface, which if it is oxide free, has a negative charge. I am not trying to convinse you to start using Synlube, but I find that they have so many positive side-effects, that it would be unwise to not test it out. Besides, I think the environmental effects of not using so much oil, should be considdered. Another thing is that I like to test out things myself to see if they work as advertised.However, you can easily find hundreds of reasons to not use it, but that is your point of wiev(together with most). That doesn't mean you are doing the right thing. A good example is the video systems Beta versus VHS. VHS won, but Beta was the best system. Most people are tricked by clever marketing, because in the end, big cash is king. And the big cash have enough resources to use in marketing. If the oil companies want you to believe that they are here to service you, they have the money needed, to do so. A little help from DuPont will be a good thing for them(but maybe not for you).