i would tell you to add a jug of EOS. EOS engine oil supplement is available from your gm dealer. it has extra, heavy high pressure lubricant needed for cam breakin. i also backup what john said, but would breakin with 30 w oil. engines run hotter during breakin and they will need the viscosity. also as he says change oil at 500 miles. then drive conservative for a while before putting the hammer down. i just wished i could do that last part with my own projects.
