"James" wrote in message
. ..
What is a good lubricant for glass sliding door tracks? I suppose I need
something that will lube the tracks for at least a few weeks, without
attracting too much dirt and grime to the lubricant itself. I have
tried
a soap bar which works well, but only for a week or so.

WD40 works intitially, but doesn't last, and attracts dirt.

Are they meant to be oiled? These days many ball bearings are sealed for
life. It's possible that oiling them is just attracting dirt which is
causing the problem. It might be just cleaning you need not oil.