Just completed changing the fluids in both diffs and T Case and this writeup was invaluable. Thank you for posting it.
The T Case and Rear Diff fluids were fine, but the front diff was definitely milky for some reason.
went to a local dealer and got replacement crush washers for all 6 plugs for $9.04. Apparently the young service tech did not put in a name for the quote so when he went to ring it up with another guy helping him it was like $30 but since he had already shown me it was $10, he said "It's your lucky day!" which was very nice. I hope he didn't get in trouble or have to pay the difference..
Here are the part numbers for the washers, i found them in the thread about changing rear diff, so I am just sharing the love in case you want to get them. I did notice the first part number item does get crushed nicely after use so it might be a good idea, but in the other thread people seem to be reusing them with no ill effects.
12157-10010 - Need 3 2 for rear diff and 1 for front diff fill plug. Invoice price $1.23
90430-18008 - Need 2 both for the T Case. Invoice price $1.51
90430-24003 - Need 1 for front diff drain plug. Invoice price $1.74 - Brass
I Got a 6-point 24MM socket and breaker bar at Harbor Freight
for like $13 total which helped a lot.
One item to note is the front diff drain plug is very large and after screwing it in all the way it did not move much at the torque phase.
Everything went well for me and the smell of 90 weight brought back memories of changing diff oil in LAVs back when I was in The Corp, so that was an added bonus to the sense of accomplishment of DIY.
I would add rep to the op, but i do not have that option available at the moment, so REP to the OP!