For what it's worth, I bought the tub (about the size of a can of beens) for a little less, because I got a discount from my MB parts guy.
They asked me to open it up when I picked it up so they could see how it looked like. MB dealer obviously wasn't using it and I must have been the first who had bought it.
It looks a little bit like very fine translucent lard and it is good for anything that slides like door hinges, sliding windows etc. You can operate them with a broken finger...