That was gonna be my next question. What weight to run after break in? I was gonna just get some 10w30 and see what my oil pressure does if it's good run it. With new bearings and a new oil pump pressure shouldn't be a problem.
Everyone has there opinion and the way that works for them. I run 10-30 Lucas Hot Rod most of the year. In the summer here in Fl. I run 10-40 Lucas Hot Rod.