Hi better if you put your problem in the heading.
see the following,
engine oil in gear and transfer box.
onlyviewtopic.php?f=3&t=19509&p=222636&hilit=+gearbox+oil#p2226362.3d is same as 2.4petrol 2.2 are slightly different.
remove bash plate. main gearbox is easy to drain awkward to fill.
Transfer box easy empty and fill.
remove filler plugs before draining!! why? because they are very tight.