Thanks, yes I have seen that product data sheet, thats what caught my attention. I prefer a good petroleum oil over Synthethic's for my Harley. I also found this statement from Pennz about ZDDP package & API's. See below. Thanks again!
I sent an Email to PennZoil asking about the content of Zinc in their oil. Here is their reply:
Thank you for your interest in our products.
You are correct the zinc in the ZDDP package for motor oil additives has been reduced recently to help protect catalytic converters on today's vehicles. Basically any oils prior to the API SM (such as SL, SJ, SH, etc.) will have at least 1000ppm zinc. The Pennzoil oils with an API SM rating will have the reduced zinc content (800-850ppm) while those such as the [color:#FFFF00]Pennzoil Outdoor Motorcycle Motor Oil in both SAE 10W-40 and SAE 20W-50 with the API SH will have 1100-1200ppm zinc. Other oils containing higher zinc levels will be any oil with a diesel rating, API CI-4 or CJ-4. The Shell Rotella SAE 15W-40 contains 1100-1200ppm zinc and Pennzoi Racing Motor Oil SAE 25W-50 has 1980ppm zinc.Sincerely
Product Technical Service, ah[/color]