I would not add Teflon particles to my oil, especially without knowing the size of these particles in microns, the mesh size of my oil filter, and what happens when you add polytetrafluoroethane to oil (viscosity changes, intermolec. forces, cohesion, adhesion, vapor pressure, other material properties). Also, I know PTFE (Teflon) degrades at high temperatures, like cookware high, higher than oil. Even though your engine isn't 500F +, I'm betting that Teflon doesn't like engine temperatures all the time. It's only a matter of time before it degrades into things like fluoride ions (loves to react).
If you regularly change your oil every 3000 miles, your engine will be fine. Decreasing the coefficient of friction in the gap between piston and cylinder might not even matter in terms of sheer stress. Sheer stress is PROBABLY controlled by the viscosity of the oil rather than the coefficient of friction. For the record, I am not suggesting you change the viscosity of your oil, either.
Oh, and Dupont, who invented Teflon, claims that "Teflon is not useful as an ingredient in oil additives or oils used for internal combustion engines."
Edit: you said PTEE, not PTFE. I can't think of anything with an E that would produce the same affects as fluorine when replacing hydrogens on a hydrocarbon... Did you mean PTFE?