beep-beep

I just bough 2009 Audi A3 quattro. It has haldex diff (attached to the rear diff). The owner manual states that the oil in the haldex has to be changed every 40K miles.

I have bough this: https://www.ecstuning.com/Search/Sit...Oil/ES2062517/
and then tried to follow this description: https://www.audiworld.com/forums/tt-...2704277/page1/

And then I encountered two problems:
1. the ecs tuning sold me the filter with large round plug for 24mm socket. My car had something like this: Haldex Gen 4 Filter Replacement Kit *(part G 055 175 A2) aparently in different years it also had a plug where you need 46mm socket to take it out. So figure out which one you need.

2. The bently manual shows where is the fill plug. It does not show where is the drain plug. The side of the diff has three plugs: fill haldex, fill diff and drain diff. guess what we opened drain diff and has to refill the diff with new 75w90 oil (2 liters).
Here is the explanation of the different plugs:
http://i17.photobucket.com/albums/b8...ps25113c04.jpg

have this picture handy