I believe Citgo Ultralife (high mileage) has HDEO-like levels of zddp (IIRC about 1200 ppm each). Search on this site, maybe VOAs, surely UOAs, somewhere. I know it has been discussed. Should be able to purchase at Meijer. And it is not expensive like Mobil 1 0w30 racing oil or Redline, both of which are high zddp. I assume AW goes with all that.
Of course any HDMO should have the additives you want too, but usually hard to find except 15w40, though 10w30 is made--try a truck supply.
