I told him I wanted a tube of it using Realmongo's description. He said he didn't know what it was or where it would be. Since he was recalcitrant, I poked around the store a bit but couldn't find it. Then, I went home to use my ample supply of chassis grease.
On a whim, I stopped at another Autozone, from whom I had originally purchased the points, and asked to look at the points they had in stock. Sure enough, their box had a small capsule of grease that looked like a time release pill. I bought that one and then went back to the original store to return the points sans grease.
At least it is back up and running now.