Prolong Super Lubricants PSL11151 Engine Treatment - 32 oz. Includes a Formula with Anti-Friction Metal Treatment Technology Features Engineering Designed to Treat Metal Surfaces of Both Gasoline and Diesel Fueled Engines Offers Molecules that Interact with Metal Surfaces and Chemically Bond to Create a Protective Layer that Reduces Damaging Friction and Heat Offers to Protect the Engine Even when the Motor Oil is Not Yet Fully Circulating Features a Formula Containing No Solid Particles Such as PTFE Resins, 'Molys', Zinc, Copper, or Graphite