I bought the 16oz size PolyLube 1000. When I first opened it it was full to the top. A couple weeks ago, I opened it again and found it collapsed in the container, shown in the picture.
Is it normal to collapse so much? It was warm when I first got it, and it was probably packaged at room temperature, but now it's around 30F. Maybe there was an air pocket, released as the grease pulled away from the sides of the container?
I've only used a volume of about five stacked quarter-dollars (two hubs' worth) dabbed from the top in the middle.