Fresh rebuild what kind of oil?

Wondering what kind of oil i should run for breakin on my rebuild. Engine has a new billet rcd cam and it had no info on breakin oil. Im thinking about using motorcraft 15 40 for breakin and switch to delo 400 syntheic. I ran the delo before and run it in my other truck eith good results.

Ford460power said:

Wondering what kind of oil i should run for breakin on my rebuild. Engine has a new billet rcd cam and it had no info on breakin oil. Im thinking about using motorcraft 15 40 for breakin and switch to delo 400 syntheic. I ran the delo before and run it in my other truck eith good results.

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I have been running le oil from jimdawg on here for a while now. Broke in a couple motors with it, changed it in 500 miles, and they were good to go. These arwnt like solid lifter motors, wjere you gotta break the cam in and all that, and get the oil changed immediately.

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Break in with conventional then switch to LE 8700 15W40 OR 8854 5W40 from jimdawg185 on here.

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International's oil from the assembly line was 10-30 conventional.