
Wow that's mighty thick oil you’re using (??).
Typically most use anywhere from 3k - 10k on diffs and 30-50K on center diffs, I’ve never heard of anyone or yet 120k oil..
Remember thicker oil in front example my GEVO I'm running 7k in front 5 k in the rear on 6 & 8s, I'm running 5k in both front and rear on my buggies and 30k for the center diff on 4s.
Personally I wouldn’t do it but that's just me..