FWIW, it doesnt seem like anyplace carries the hyperlube zinc replacement anywhere around me at least. The closest place is an O'Reilley in CT...
Ebay sellers online are the ONLY place I've found this recently, as it's been dropped from; amazon, Wal Mart online, Pep Boyzz, Auto Zone and Advance, Car Quest and NAPAs (not even in their 'systems' any more).
I am guessing due to the cost for a 12oz. bottle, most wanting a "real" ZDDP additive, whether they need it, or it could HURT their modern engine/catcons, or not, and that it actually DOES 'work'.
One ebay seller had 3 bottles for ~$45.00 with free USPS shipping included.