I can add a little bit to what has been posted before.
This product appears to be made out of Ketjenlube 135. If you download the MSDS from hyperlube's website, the title of the pdf (under file--->properties) states "9233 KETJENLUBE® 135 (English (US)) AKZO USA"
Ketjenlube is a brand name, and Akzo is the manufacturer.
It's quite viscous. It's briefly described in passing in U.S. Patent Application Publication No. 20090163393, which states:
"In one embodiment, the ester base stock for use herein is "Ketjenlube 135" a butanol ester of an α-olefin maleic acid copolymer having an Mn of 1800 and a viscosity of 35 cSt at 100° C."
There was some brief discussion about Ketjenlube 135 earlier here: http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1173617
Other: I saw some comments about Ketjenlube 230, which is described as a low polar version of Ketjenlube 135 for better compatibility, which obviously means that K 135 might not be that compatible with everything.
I will guess that it's probably a good product but expensive, probably does what it purports to do (for how long, I have no idea), and will make your oil more viscous, which can be bad if you're someplace really cold. I'm curious enough to give it a shot.