The PTFE colloids that are contained in SynLube Lube-4-Life® reduce the Bearing Clearances, which in turn lower the lubricant side leakage rate. This brings onset of the favorable Hydrodynamic Lubrication regime at lower rotational speeds and results in better fuel efficiency and less Wear. Reduced clearances also reduce vibration and noise generation, SynLube Lube-4-Life® lubricated mechanisms therefore run noticeably quieter sometimes [by] up to several decibels.
The primary means by which PTFE forms a "coating" occurs as a function of normal engine operation when an extremely heavy load is placed on an engine component. The PTFE becomes plasticized and is pushed into the fine "valleys" in machined surfaces. Secondarily, they are also found on metal parts as a result of being attracted to the esters in the formula that are negatively charged and therefore attracted to positively charged engine surfaces.
All of this occurs well before the 450 degrees Centigrade mention. This temperature should never be encountered in a anything approaching normal engine operation.