Zinc Rich Oil for Flat Tappet Cams
Even though it will have a roller cam I plan to use Schaeffer's oil in my 5.9 Magnum because it has molybdenum. That's the big "new thing" in motor oil and its pretty amazing for wear; in some cases it can even repair slight wear at the microscopic level. I used to use Brad Penn which is great oil but the Schaeffer's 7000 is like $1/qt more if that and it has the moly. Not saying it's a replacement for zinc I just think it's cool tbh.