Help! My 2001 Allroad (~45,000 miles) with automatic transmission is leaking oil around the output flange. I think its the output flange seal. Have anyone done the replacement before, I could use some help. Any step by step instruction? Do I need to remove the exhaust? Both side? How? Looks difficult! How do I remove the drive shaft? Is it normal for the flange seal go bad? Is the DPH brand of replacement seal any good?

Thanks in Advance

http://forums.audiworld.com/a6/msgs/655180.phtml
In 40 years of DIY I have never had to change a rotory shoft seal.