Yea I wanted to run all royal purp but dont have that kind of cash for just oil The instructor said the non detergent oil has the zinc and what not in it and to run it for 1000 miles to help harden compenents such as cam and what not
Plus the 30 non detergent oil i got was 4 bucks a quart but the guy at kragen hooked it up and charged my like 2 bucks saying it was a "sale " item