I just looked up dri slide too, I've got a bad noise coming from I think m tach or speedo, and it was recommended that I lube them. I found this thread when trying to figure out exactly what to lube them with, unfortunately it doesnt look like dri-slide is available locally.
Anyway, found an interesting blurb about dri-slide while googling for it's main ingredient and ending up at wikipedia
"During the Vietnam war, a commercial molybdenum disulfide product, "Dri-Slide", was used for lubricating troops' weapons; the military refused to supply it, as it was "not in the manual", so it was sent to soldiers by their parents and friends privately.[2] Another application is for coating bullets, giving them easier passage through the rifle barrel with less deformation and better ballistic accuracy."