Ticking Noise - 273

Ok, I have to come clean. There was something that I did not tell you.

While I had the car up on ramps, I had the bright idea of stuffing a short length of hose between the oil pan and the flywheel cover. I did this to catch any oil that would otherwise drip from the rear main seal onto the exhaust. I kept telling myself, this can't be the reason for the ticking.......

Guess what? I took the hose back out, and the ticking stopped.
Could it have been the fly wheel cover rubbing on the fly wheel?

Thanks for the feed back especially regarding the oil additives.

Rob.