Dr. Ben Loving told me that he designed the synthetic molecule for aircraft hydraulic fluid, that Mobile got the contract, and built a factory. Getting paid by the Government took so long that Mobile combined motor oil additives, and sold it as Mobile 1. He would know if it could harm a shotgun.
I do not know if the additives contain anything harmful to a shotgun hinge. Detergents, dispersents, and viscosity improvers are what I have read about for oil additives. I do not know what is in them.
Some EP additives can etch metal. A car manual I had called for specific transmission oil that does not etch. First clue I had of the possibility, and that manufacturer considered it a problem.
Last edited by J. Hall; 10/13/11 09:04 AM.