BTW, came across this from five years ago. Did anyone try it?
I drove mine long enough to heat the oil, pulled into the garage, and placed a low oil pan under the BB. I unscrewed the big lower drain plug, and let the hot goop flow out.
I opened the upper fill plug just above the drain, and let it all stay open and dripping overnight.
I plugged the bottom drain, and refilled the top port until it back dripped.
I plugged the upper fill port, made sure all was tight, and went for a ride.
I did this 4 times, using Moroso Climbing Lube, drained it hot each time, and got more of the black goop out each time.
By the 4th oil hot oil change, the fluid coming out was the same color as what was going in, and the BB is now, well almost, quiet.
I think that is all referring to a short time in 2013 or 2014 when Morgan tried an additive in the Bevel Box oil to make it a little quieter. The additive didn't work and made the lubricant form into a sludge. It was to remove this sludge and get some proper lubricant into the BB that this procedure was carried out. Not something needed now as long as you use a good quality BB lubricant.
