They are almost all the same, 1 moly plus 2 Sulfur is your mos2, and tn is more of the same plus NR. People have been adding powdered moly in suspension to organic oil soluble moly or tn moly for a long time. I don't see any possible side effects other then when you add a lot of moly, you are also adding a lot of sulfur, and there is a finite amount of that you want in gasoline engines because soft metals do not like it.