MGBV8: This information is dated and worthless. Dupont now sells a version of PTFE specifically designed for inclusion in automotive lubricants. So does Shamrock Technologies.
The PTFE that Slick 50 contains is NOT the same as that in SynLube. SynLube uses a form of PTFE called nanoFlon made by Shamrock Technologies. The particles in Slick 50 are up to 2300 times the size of the colloids in SynLube which are approximately 1 micron in size. The SynLube formula is what's called a lyophilic sol because the solids in SynLube are permanently attracted to the liquid lubricants so they won't coagulate or settle out.