2002 Volvo S80 2.9 oil leak
 

First time poster, I'm sure this has been gone over before but I have a pretty bad oil leak coming from the rear of the engine. Lost over a quart of oil in just 10-20 miles of driving. I've gotten the car on a lift and can't find the exact cause due to the space being so cramped, tomorrow I will be removing the p/s axle and axle bracket so that I can get a better look. I have my ideas of what it might be but was hoping to get some input from someone that knows about these cars.
Any help is appreciated!