Break in period and oil

[techspy]

So my engine has been rebuilt and I am going to put her back in this weekend (lost timing belt while running) and have a question about the break-in period and what oil should be used. So, how long should the break-in period be and what oil should be used? What operating parameters should I follow during the break-in period?

Thanks!

[techspy]

That is my thread! I have received some input from some experienced owners and have decided to use the oil I will be running from the beginning (15w50 Mobile 1).