First oil change on fresh engine... What to look for?

Alright, enough fear mongering and let's look at the reality of it.
What oil did you use for startup?
It's not quite as important as the assembly lube. Back in the early 90's a buddy bought a reman 350shivvy and we put it in his truck at my place. His motor, he was in charge. get it all assembled and fire it up! Sounds good except for the badass clanking of the rockers...I jumped up and yanked a cover and had him fire it again....no oil! LOL Called the guy that built it, he said to rev it for a while...LOL did that! got louder! called him again and he said, what about the oil pump rod? Doh...damn shivvy's!
Anyway, it was fine after all that!!!

Buy some SuperTech and a bottle of stp...let it get good and hot before you change it.
When the car is gonna be sitting you wanna change the oil just prior to storage to remove corrosive crap.