Originally Posted By: 95busa
All snake oil. Show me a million mile vehicle using mos2. Then I am in. Show me something scientific. Placebos- 60% of the time, they work every time!
Beyond what others have suggested here, I would suggest that with respect to the moly bandwagon, oil companies have hitched their wagons to different horses, i.e. different types of moly. I have a sneaking hunch that mos2 is far from an ideal additive in an ILSAC rated oil and FM properties can be obtained by using other types of moly.
Under certain, well defined conditions, there are additives and levels of those additives that can provide a benefit, such as ridiculously high ZDDP levels in racing engines, or higher than normal levels in break in oils. That doesn't mean that such levels are suitable in a normal, GF-5 rated oil. Nor are all types of ZDDP the same, either.