Mine was originally filled with the black goo, even after 2 dealer services it had not been flushed out or topped up. So much for changing it at every service.

This is why I do my own servicing now.

I took the drain plug out and NOTHING came out so I left a drain pan underneath for a day or two and got about a spoonful of black gloop out.

So I flushed the BB out with diesel twice, then cheap engine oil, then re-filled with Millers EP140.

Thankfully no damage done to the internals.

I'm now on the third fill with the Millers and after a summers driving it comes out pretty clean.