How about using silicone and mixing the graphite powder they sell for lock cylinders in with it?

Spray will silicone. Get that spray in there with the red straw that comes with it. And clean the old grease off, then regrease it. Use a Q tip, it works perfect.

You can use Spray Graphite lube. Its a bit messier, and leaves your hands black, but the spray tube feature is great for getting into the calbe housings. Excellent for lock barrels etc, when dryness is important. www.amazon.com/Automotive-Graphite-Lubricants/b?ie=UTF8&node=15719321 Stay gold.

Google.

I replaced the wire with fishing line and it's working .. for now. I think it might have been better to replace it with picture hanging wire (wire rated for a 100 LB mirror actually has a tensile strength near 150 LB), which would be less prone to either stretching or breaking.

You can get to the critical parts of some of them while they are still in the door. The cables on my Hyundai run right under the plug that gives access to the glass fitting. Years ago, I had a slow window on an Olds 98, so I just squirted grease into the door in every direction until it started dripping out of the drain holes. That window was always the fastest from then on and that door stayed solid while some of the others rusted out.

csm you should be fine it just might not last as long m/stay lubricated as long

Silicone lubricant 3M 0889 (dry type): is a good choice for lubricating your automobiles window tracks. This product has got better reviews. Consumers are much satisfied with its long lasting feature. It really provides flow in the car tracks, keeping away dirt and providing lubrication for long time once it is applied. One thing should be cared properly that it is being applied nicely so that it is reaching till the end parts of window tracks. Otherwise, tracks start jamming soon as its lower parts stay dry and do not offer much lubrication for the widows to move over the tracks.