Which Oil to use on a freshly rebuilt motor?

[Dsmboy1991]

There are quite a few different theories on break in. However I agree with Jet with the frequent oil change method. The luck I had with mine was using a heavier weight 20w 50. I changed, after first day of running, 500, 1000, 1500, then switched to 10w 30 synthetic and regular routine. Like I said though, alot of different theories are out there, ha ha.