While visiting Lunchbucket's reef in South Dakota, I noticed his Calcium Reactor bubble counter was moving in slow motion. It was really neat, and later at Goodwin9's home, I got a bottle of the mystery syrup.
I noticed my bubble counter was empty again as of yesterday (it either evaporates or bubbles the liquid up the airline tubing), so I cleaned it well and filled it up with this oil.
Here's a video of how it looks. (3 megs - Right Click & Save As to your harddrive please) With the slowly rising bubbles, it is much easier to count bubbles per second.
Finally, a link to where you can buy it.