Diff. lifetime lube ? That is ridiculas .
I drained that NASTY oil out of it and filled it with Mobil 1 synt. gear lube like it said in the book . Those magnets on the drain plugs where cacked with shavings . they were 3x biger then the magnet .
Oh and U joints have greasible fittings on my Disco II 1999 . I also think it might have grease fittings on the ball joints . But not sure .
As soon I got it home . my dad went under it and packed all the joints that had fittings full of grease . We had to put a new tube into the grease gun

. And i think the stearing boll joints have the fittings on them and they were DRY .