About half a pint of the same oil the transmission runs is plenty to put into the ball housing. (90 weight mineral oil- - -NOT hypoid rear end lube) The U joint will splash it around enough to keep everything wet down and well lubed.

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!