Originally Posted by OldChief7155
Dry silicone is better than grease. Grease attracts and holds dirt and grit.
Spray graphite is the best. NAPA sells it and I'm sure other places have it as well. Graphite powder is easy to find but the sprayable stuff is a little less well known. The agent (carrier) dries quickly leaving the graphite base to do it's job.
IMHO, slide-out lube would be better than silicone, WD40, PB Blaster, etc. All the above either collect dust & dirt or dry out.