1990 Chevy Lumina APV-Major Oil Leak

Engine:
3.1 V6
230,000 miles

I know, it is a hunk of metal junk, but it is what I have. Anyway, I have noticed that this thing is basically bleeding to death. When parked it will leave a huge oil slick that appears to be directly under the front vavle cover. When you look underneath you can see droplets of oil on the crossmember, of the frame, between the wheels and also on the bellhousing. Both of these are in line under the front valve cover.

The oil that is leaking is clean and there is no smoke what so ever from the engine. I have a oil gauge that tells me when it is time to add more oil that I watch constantly. I have very limited means right now and just would like to have an idea of what might be leaking.