rebuilt engine break in oil

[pjq]

Great information guys, thanks.
I just got back from the engine shop and he does carry Joe Gibbs and Royal Purple so I now have a supplier of Joe Gibbs.
Because there is not a conventional 40 wt Joe Gibb oil, he suggested for the second stage of break in to use a conventional vavoline or castrol 5w40 with a zinc additive from a GM dealership. So it sounds like he's on the same wave length as Jake and Charles.

What about changing transmission oil.
Other than Porsche what is the next recommended brand? I was told by a Porsche dealer to use a synthetic 75W90. Anything wrong with Joe Gibbs or Royal Purple?