Labelle #106 plastic compatible grease with PTFE*
Just a "dab" of this grease will work wonders for your gear box, put a small amount 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.
Additional Suggested Uses:Model Trains: exposed or enclosed Gear Boxes (all scales);RC Models. exposed or enclosed gear boxes on all RC models of all sizes and type and Shock Absorbers;Slot Cars: exposed or enclosed gear boxes on Slot Cars of all sizes;Bicycles: enclosed cable rub points and gears;Fishing Reel mechanisms;
Other uses: Enclosed gear boxes on all sorts of household items, squeaky door hinges, riding toys and 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.