Driven Racing Oil has a product called GP-1 that is a blend of Pennsylvania crude and synthetic base stocks. They source their Penn from American Refining Group, the company who used to produce Brad Penn before the DA Lubricants buyout. I dont know where the synthetic portion is sourced from. ARG refines Penn crude at the Bradford, Pennsylvania refinery, which originally was the Kendall and Amalie oil refinery. That is where Brad Penn used to be made. As far as I know, Pennzoil and Quaker State have not used Penn grade base stocks since the 90s.