Scotty is spot on. That break in period is old school. Newer engines don't require the type of break-in period that engines years ago did.
As far as Royal Purple goes, it is the only oil I've ever used that made an instant difference in MPG and cooler operating temps. That said I only run it occasionally now due to cost and I've heard that RP isn't the best oil to run in a car that's driven infrequently. Someting about an acidic buildup, although that's just what some people have said. I quit using RP in my car back when it was only being driven a few miles on the weekend.
