rear end plug

couple months ago added a drain plug to the rear axle housing - see this article - http://www.sweptline.com/tech/drainplug.html - while it was pointed out to me it would be better to pull the center section apart and do a good clean then refill - i have to be realistic and admit i will not be doing that right now - so drain plug for now and new fluid - maybe drive a bit and repeat - oo3