I think that I have heard of it but I have not tried it.
The problem with some of these Moly supplements (I am assuing that this is a Moly engine supplement) is that the Moly is just suspended in the oil. But with a lot of modern moror oils that contain Moly, the Moly is not merely suspended in the oil but in a molecular form. Moly in oils like Schaeffer's, for example, can't settle out, or be removed by an oil filter.
