Some say 100 then 3000, some say 100 then 500, then 3000. Most people will say run good ole Dino oil with a additive that is made for engine break in. The oil these days doesn't contain the amounts of zinc and phosphorus that is needed to properly allow the engine to "break in".
Use a quality additive like royal purple, red line, Lucas, high end Manf. Don't cheap on this stuff.