gmr differential oil drain?

I see the fill plug. Is there a drain or is it "suck it out" time?

Did a little research and found there is no drain and no reason to change it according to oilhammer. I'll just check it through the fill port and if necessary ad till it starts dribbling out and of course check for leaks if I do require adding.

you can drain it, there is a drain

not according to mogolf and oilhammer.