Hi - These are all great questions!
I have word back on the Zinc PPM from Royal Mfg and it 1371ppm which is high - which is good. I am still waiting for the MSDS but as you can see on the label it clearly states PAO (polyalpha-olephin) true synthetic base oil being used.
On Mon, Jun 11, 2012 at 3:53 PM, Terry Davis wrote:
The Zinc content of our Monarch Super Syn 15/50 motorcycle oil is around 1371ppm based on average blend results. Hope this will help in answering your question.
Please let me know if you need anything else. We look forward to helping!
Senior Account Manager
Royal Mfg. Co., L.P.