I built up a decent stash of CD2 "Street Legal Oil Boost" (a.k.a. "SLOB") when it went on closeout. Been using it for awhile now, but sparingly.

Here's an independant, archived analysis of the product:

Zinc: 4898 ppm
Phosphorus: 4921 ppm
Calcium: 4279 ppm
Moly: 0 ppm
Vis @100C: 29.5 cSt

Numbers were compared against manufacturer's claims and were found to be fairly close.

It's been discontinued for awhile now, but maybe some will pop back up again somewhere. It sems to be a decent product but was marketed poorly: it came in a PINK bottle with a picture of a modified honda civic on it. Bad idea.