If additives in Red n Tacky do attack bronze, then I wouldn't use it in a model train. What was it originally marketed for, what kind of materials? So many of my locos have nylon gears, I've been using Labelle 106 & 107 for years. Also Mobil 1 5W30 synthetic for oil, and occasionally Lubriplate or the gooey black Molybdenum (moly) grease on old-school postwar with all-metal gears.
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