I have been using a tube of Park Tools grease for a while now on pedal spindles threads on bolts, etc. It's probably 2 years old. Basically, if it has metal threads and is on my bike, this is what I use. All I know about it is that it says "bottom brackets, headsets and hubs" on it. (I'm not near my house and may need to stop off at a shop on my way home depending on the answers here, otherwise I would put up better info.)

Three questions:

1) Is this appropriate for application on stem bolts, seatpost clamp bolts and pedal spindles?
2) Is this appropriate for use on the hub when installing a new cassette?
3) Sometimes when I have not used it for a while some liquid will come out before the grease, like it has separated. When this happens I close the tube, shake it/knead it, and try again. No liquid. Is that ok, or does grease "go bad?"

Thanks in advance.