106 Grease with PTFE Labelle Industries Just a "dab" will work wonders, put a "dab" on the exposed gear box and run a minute or so, then add another "dab" and it will work its way throughout the gear box and worm gear.--Model Trains: Exposed Gear Boxes (all scales) --RC Models. Exposed gear boxes on all RC models of all sizes and type. Shock Absorbers --Slot Cars: Exposed gear boxes on Slot Cars of all Sizes --Bicycles: Exposed cable rub points, gears. --Fishing Reel mechanisms --Other uses: Exposed gear boxes on all sorts of Household items, squeaky door hinges, Riding toys, musical instrument keys, mechanical toys of all types.**PTFE has been called "the slickest substance known to man" is is the parent chemical of "Teflon" which is registered trademark of Dupont Chemicals.