Anyone use the oil additive product called, "ZDDP" in there motorcycle?

This was developed and endorsed by "Big Daddy" Don Garlits, to supplement the deficiency of (Zinc Dialkyl Dithio Phosphate) removed by manufacturers from oil to increase the life of "Catalytic Converters" which were clogging up prematurely. It is better explained on the (www.zddplus.com) web site. This additive is made for the "Non catalytic" types of engines that use (NON-ROLLER) type cam push rods. With these type of engines, and the current formulation of the oil, the cams can be subject to a diminished longevity.