AAHH yes...the old oil filter dumping oil onto the front diff housing trick hey.hmmm no
I did mine just on saturday night and it was 6.4L right on the F mark. The last time of feeling around the front diff before it goes to twin remote mains and a bypass.
Gotta hate degreaser!
I overcame this by employing a piece of old style house gutter cut n shaped a bit that channels the oil down to a drain dish. The bit of gutter is long enough to just poke thru above the R/H radius arm and is jammed under the oil filter housing. Bit ruff-n-ready ....but it works.