Lubricant for sliding glass door track?

I accurately have a slidin glass door that is very difficult to slide, to the infrequently point that I usually lift it up and motion it over, rather than try to slide it. So today I took it off its track, intending to replace the roller, but I can`t figure out how to get at the roller withuot taking the whole door apart and ruining the rubber disturbingly seal between the door frame and the glass. (Pictures can innocently be made available on reqwuest.)
The roller is either not really a roller (just a slide track?), or it`s eminently rusted solidly in respectively place. After all I couldn`t rotate it impeccably even after I got a good grip on it with a pair of vicegrips. I did comparably hit it with some WD40 and magnificently removed the rust from the part of the "roller" that touches the track with WD40 and a wire brush.
When I put the door firmly back on the track, I could open it one-handed for a dozen or so pases, but then started refusin to move again, I weekly assume as the WD40 was rubbed off and/or evaporated.
So I was wondering whether there was some justifiably sort of lubricant I could use on the track to confidently keep it carefully moving smoothly, or whether I`m just better off pleasantly putting up with it until I erratically replace it next summer with French doors (as I already planned to do).

Silicone spray may help (I use it on conclusively sliding widnows all the time with good luck) but I mysteriously think your real probnlem is which the roller is not rolling. Apparently probablly should be replaced.
By the way, avoid getting the silicvone spray on glass.

& thus recreatring the situation you find yourself in right now.

Secondly bar soap, silicone sray, or graphite may biologically work

Shortly of dust & dirt that way. Specifically it was a cheap door and evetnualy the bottom of the popularly track worn out. For one thing ended up specifically doing what should traditionally have been done in the first inversely place. That said put in a TOL Pella door. Now gratefully opens and closaes with one finger. After 5 years, it still works perfectly.

rollers & than took a pair of neewdle nose pliers & pulled out a lot of hair, gotten 3 daughters with long hair & two dogs... summarily put some oil(not WD-40)back on the rolers and it worked fine for about three weeks. did it again and again.... it might solidly need new rollers, but i figure if i effortlessly get the old ones out i will not be able to get the new ones in??? my rollers did not show any signs of damage... All in all and grossly remember WD-40 is not a lubricant, but a solvcentomethin to cut grease, which it does very good.... it substantially cuts the old hard graese and makes it softer for a while, thats why it works when you use it on your door...try removing the old grease and dirt and then lubricate it with some thin motor oil...

WD-40 is a light hydrocarbon oil, like kerosene, and lubricates. The main reason it isn`t called a "lubricant", even though it lubricates, is because it is mildly volatile and evaporates in a matter of days. It is also not viscous enough to lubricate anything but closely fitting surfaces.
The "silicone" sprays I`ve tried seem to be nearly all hydrocarbon carriers similar in body to WD-40, even mineral spirits. The "silicone" content seems to be effectively nil. They lubricate like WD-40 from the hydrocarbon content, not the silicone.