Any saab owners ?

I was wondering if there are any other saab owners on this site. I own 2 saabs 9-5, one from 2000 and an aero model from 2007. Was looking for some advice on how to stop an oil leak on the 2000 model. Currently the 2007 model doesn't run since I need to change the gearbox. Both are automatic, 2.3T 250HP (swapped the engine on the 2000 oine, it was initially 2.0T)