[RocktimusPryme]

I know you are looking for something available local, but I think I might take an extra two days and order a purpose built break in oil from Amazon or something.

I mean you only break in a cam once. There are no do-overs.

Also as Formulas said, Ive also spent a fair amount of my time down the internet rabbit hole looking at oil SDSs. They change all the time and are often hard to pin down or provide incomplete information. At the end of the day I just sorta determined the black magic of it isn't worth the $9 extra dollars you save by not buying a specialty oil for whatever your needs are.

You also might be able to order a break in oil from a local parts store. Might be faster, and not have to pay for shipping. Worth asking the question anyway. Also, if nothing else I know the auto parts stores usually carry the bottles of zinc additive. I personally would prefer a purpose break in oil, but its another option.