Here are some links to VOAs performed by Blackstone on some older motor oils.
https://bobistheoilguy.com/forums/threads/are-there-any-links-to-voas-of-popular-motor-oils-used-in-the-60s-and-70s.330633/#post-5497439
Just me, but I would get one from a Toyota dealer. If you want the metal cap, you have to reuse the longer center tube from your old cap.
Dorman and disappointment seem to go together.