Greetings:
Interesting read...everything you wanted to know (or not) about oil:
http://www.bobistheoilguy.com/motor-oil-101/
Before I read this, I was thinking of trying out Rotella 15w40 in the '29. I still may, but I will most likely stick with the QS 10w30 my Dad (and now I) have used in the car for many, many years.
Enjoy!
Ted
Wow !!! Great blog on oil. This really explains a lot.
Thanks Ted
Ditto!
SteveG