I'm finalizing my chassis build and need some opinions on break in oils:

The engine, a crate 5.0 SB Ford, GT40, roller engine but E303 camshaft, stock lifters, Crane 1.7 rockers and the Crane recommended springs and with a standard flow front sump Melling oil pump. Rotating assembly is as shipped from Ford.

Ford would use their recommended standard Motorcraft 5W-20 oil. No problem, I have some - but do they use any kind of friction modifier? After break in I will be changing to Mobil 1 (probably the 3rd change @ approx 1000 miles)