I am doing some maintenance on my Rs6 and had a question regarding proper filling of the front differential as I have found a couple of different opinions. When refilling the front differential, do you fill it up until it starts dripping out the hole like with the rear differential. I have come across some people saying that with the front diff, it should only be filled to 6mm below the fill hole. When I opened my front diff plug to check my current level, it was dripping out once the plug was removed so I question if my front diff is overfilled or at an appropriate level.