Recent television commercials have demonstrated engines running without motor oil. I.J.P. stands for Intermetallic Junction Preventative.
Intermetallic junctions are the essence of friction and wear.
They are microscopic physical barriers created by the natural exchange of molecules between metal surfaces moving in close proximity, such as pistons in cylinders. Since metal parts are constantly losing molecules, all adjacent metal surfaces are, in effect, always wearing. Without additives, refined crude oil simply could not protect an engine. In fact, some brands may contain up to 40 percent additives. Generally speaking, vehicle manufacturers neither approve nor disapprove of the use of oil additives or engine treatments, nor do they endorse or recommend the use of specific brands of motor oil.