Brad Penn oil, Anyone useing it

I don't know whats running in the barracuda right now, but on the old 4.2L flat tappet jeep engines (and the 4.0L's for that matter) all we ever ran was Shell Rottella T 15/40 diesel oil. Worked wonders on those engines, and being old school diesel oil if I remember correctly it had a high zinc content as well.
Brad Penn.. Im going to have to look into that oil. Never heard of it.