I was wondering the same (reheating), let me know how it goes.Mine looks just like your amber oil while still warm before solidification but then the whole thing turns to pure white grease when it cools over night. Stays the same wither summer hot or winter cold in my exterior shed. There is no oil on top or on the bottom just white grease top to bottom.
I wonder if reheating would separate oil from grease? I will give that a try and see what happens .
Mine stayed clear (amber) for a year until I used up the first bottle, just a little 'clouding' formed over the winter.
The frozen bottle 'separated' top/bottom after thawing at room temp, I just poured off the top to refill the small bottle...I have been wondering once I am down to just the 'frothy' bottom.
The 'Bear Grease' I got from a drum maker is a bit differen, brownish in color but just as slick, and it's very watery...I have not done anything with it yet, just sits in the tub it came in....