Hi, all.  '91 Miata that had a clutch put in about 30K ago.  Yesterday and
today clutch seems to be slipping a bit and no power making it to the rear
wheels.  Tonight it got worse quickly.  I put it up on the ramps and lo and
behold, there's oil all over the tranny and the tunnel above.  No leaks on
the driveway but quite a bit spread all over on the underside of the car.
It's definitely leaking where the trans bolts to the block.  My hope?  I
assume there's a rear main seal that's leaking and allowing the flywheel to
sling oil everywhere including the clutch plate.  If that's the case, can I
just have the tranny dropped, the seal replaced and just clean up the clutch
as long as it's still pretty meaty?  My first clutch went 90K and I used a
genuine Mazda when I had it replaced.  Thoughts?  Thanks to all.....

I'm 90% sure it's oil.  It's not red, and has the heavier consistency of
oil, but then again I can't honestly say I know what color trans fluid is.
Red like ATF?  Duhhhh....