I have an oil leak that I can't find. It's kind of weird. It will leave about a coffee can size puddle after driving for awhile but if I let it warm up and then rev it a few times it will not leak. It's will only leak if driven. It seems like it's coming from the bell housing. Not the front side of the shield between the block and the bell housing. The funny thing is too that I just changed the oil and what is coming out is kind of red. It does not look like oil. It also seems like it's coming out between the bell housing and the trans. Could it be the bearing retainer? I did a clutch about a year ago and changed to a steel one? I didn't change the rear main seal because it wasn't leaking. I just noticed the leak over this past winter while working on the exhaust. I drove it all last summer and hard. My oil pressure and level where fine. It's just so hard to tell where it's coming from. I checked my valve covers, PCV valve, oil pan. All are bone dry. Back of the engine all around heads....dry. Could it be the rear main or could the trans be leaking. Wouldn't my clutch slip if it was either?