U-joint lubing on '91 200Q (there isn't one on mine)

[Arun Rao <rao@pixar.com>]

 I reported some time ago that there wasn't any grease nipple on my
car's prop shaft U-joint -- and got many unequivocal responses that
there *had* to be one, and that I must have missed it.

Well, I had my mechanic put the car up on the rack and take a look : I
wasn't nuts, there really *isn't* a grease nipple on my car.  My
mechanic said by looking at it that it didn't look like a lube-able
joint.

So, there it is: probably a running change that Audi didn't tell anyone
about.

-Arun