Moly is the only additive that has been used for over 60 years by everyone from the oil industry to the military. It is not a "snake oil". It is a proven antiwear additive.
I have used it in every engine, gearcase, and use moly grease on every machine for the last 35 years and I have never had a failure that was caused by using moly. Used as directed you will never damage your machine and you will add years/miles/hours to its life.

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Mark
82 300SD 110k
91 Caprice SS
92 Jetta TD
97 Cadillac Concours(300hp)
84 Celebrity 4.3L diesel