Engine oil
To break your cam in use a good oil (Valvoline,Kendall,etc)and pour in a bottle of Comp Cams additive. Or even use there new break in oil.
I trust Comp Cams stuff,but lets face it any of the additives(Hughes,Brad Penn,GM,Royal Purple,etc) will work.
Run it for a couple hundred miles,drain it,Break in done.
After break in I like Valvoline VR-1 or Kendall Racing oils.
Oils that say "Racing" or off-road only,usually contain more zinc.
Adding a bottle of zinc additive every or every other oil change cant hurt.
Thats old info on the Rotella,the zinc content isnt the same anymore.
Buy the way,same motor same cam in my avatar pic.
360,Comp 268. Use the Comp additive.