Bud and Monti,
It is necessary once in awhile to lube the slide mechanism. However, generally all you need to do is keep it clean. But, if you do lube it, use either a dry-graphite or silicone. Both come in spray aersol cans. All that needs to be sprayed is the gear rack on the under-side of the inner tube and the spur gear in the gear pack assembly. Where those teeth mesh is the ONLY place there is metal-to-metal contact in the system. If the sides and top of the inner tube are sprayed, it is a waste because, the sides of those tubes rub or touch nothing
The reason we recommend dry-graphite or silicone is because, with using oil-based lubricants, oils,greases,etc, will cause dirt to stick and wear the system out prematurely.
If you have any further questions, contact me at our toll free number at 866-524-7821.
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