The most likely place for an oil soaked clutch would be from the rear main seal or the input shaft seal on the transmission. Don't waste your time trying to clean your clutch disk, just get your hands on a new one. And also when you have your tranny out, find that leak and fix it! now is a good time to replace rear main seal and/or oil pan gasket, and check the input shaft seal as well.
( Carter ) 1993 Mustang GT - "Blackie" - The go-getter.
1991 LX 2.3 5 Speed Hatch - Family Mustang
1969 F-100 390 4 speed - Project Rustoleum
Summit Racing and Latemodel Restoration Supply have brought me this far, my imagination will bring me all the way.