Slick50........the age old arguement.
Its a PTFE solid dispersant, meaning particles of PTFE are circulated via the oil system to areas of MOFT metal to metal contact. Somewhere its meant to be an EPA and a friction modifier.
Now, PTFE is GREAT when used as an alloyed film on bronze-lead sintered-PTFE bearings, or with copper and Titainium. BUT its practically useless and detrimental to engine life (debatable some might say) as a solid dispersant running around your oil system. Itll accelerate particulate formation as it burns and creates deposits which can clog oilways, bearings, cause ring sticking, bearing failure, oil filter blockage etc etc.
All oils have their own EPAs which are normally organic zinc, moly and pottasium and adheire to metal surfaces through heat preassure and in some cases electro-field formation. They form a monomolecular layer which is there temporarily and prevents true metal to metal contact in times of little or no oil film or film shear.
The power steering stuff is ok, as there are no extreem pressure conditions......but not in my engine or gearbox thanks!