1. Engine oil additives such as chlorinated paraffins, molybdenum or nylon polymers which claim they will coat your metal parts with anti-ware lubricating films.
2. Engine oil additives containing zinc dialkyldithiophosphate (“zinc” for our purposes here).
3. Engine oil products which add the same additives used by oil manufacturers, only in different amounts and combinations.
4. The engine oil additives come to us as a formula including PTFE (Polytetrafluoroethylene, which is really nothing less than Teflon TM).
5. Engine oil additives products containing solvents and detergents, such as kerosene, naphthalene, xylene, acetone or isopropanol.

Many engine oil additives promise to reduce friction. Obviously, this is the one issue we all need for our cars and trucks. The presence of friction – metal on metal inside the engine’s combustion chamber – often indicates there is little or no protection of the engine walls or parts from the moving metal parts of the operating engine.

Friction generates intense heat and very often indicates the galling of metal parts and surfaces. In other words, your engine is being gouged, scored or gashed piece by piece over time. (See test photos).