Yesterday I was talking with an ex-Lubrizol formulator - currently blender. He told me that the Moly used in engine oil is almost always a type that is used as an anti-oxidant. That no major oil company uses moly as an anti-wear, and only a few boutique blenders use it to claim reduced wear which they may or may not be able to substantiate. Even then, in a formulation that might show 300 ppm of moly, maybe only 30 or 40 are anti-wear substances with the rest being the normal anti-oxidant type. Oil analisis does not distinguish between the different moly additives.