Here is the thing. I don’t know, and I doubt there is any way to know, whether the classic car motor oil made for the classic car club by DA Lubricants is the same as the Penn Grade One product they sell. Penn Grade One uses a specific type of PA crude for its base stock, and is refined in Bradford Pa. It’s why the stuff has a green color to it. I have actually been there, I had a daughter who went to college there. Zippo lighters are also made there. And, truth be told, I used the Kendal 1 racing oil for years and never once had a failure, same as the PennGrade One.
I just think it’s a good reliable lubricant for use in these old motors and my experience using the stuff proves that out, to me anyhow, lol.
DA has been in the oil biz for a long time. I have a full metal can of their old famous Speed Sport motor oil. They sold that stuff for years. So it’s entirely possible they are blending the classic car oil from another suitable oil stock, just not PA base crude, and not refined at the former Kendal refinery, but has all the other additives as the Penn Grade One.
For the 12 dollar difference between the cost of 6 quarts, pretty negligible so maybe consider using the name brand stuff.
