Jerry, yes from what I understand you hit the nail on the head. The D-A Lubricants company took over the old Kendall refinery in Bradford, PA, rebranded the products as Brad Penn, kept the green oil color, (and same formulation at least for a time, I believe) as part of their marketing. They claim the oil is still cut from stock out of the original Bradford oil field.
The products are marketed as "the Original Green Oil," sort of an under new management marketing approach. Fast forward, and Brad Penn oil is now Penngrade 1, semi-synthetic, still produced in the Bradford refinery, and still green. Oil that is labeled Brad Penn may still be around online, but their website seems to have converted now to just Penngrade 1 products. It still has higher zinc (although I doubt that's right out of the ground), and is available in straight 30 weight or multi-viscosity. Places like Summit carry the oil.
I've used both Brad Penn (including their 30 weight break-in oil) and Penngrade 1 oil with good results, FWIW.
