[bigblockcoupe]

use straight 30 weight as the break in oil there is no reason to let it rev to 2500 for 10 minutes just start it set the timing and top off the coolant let it warm up to make sure the thermostat is opening correctly and check for any leaksturn it off and let it sit for a few minutes then check the oil to make sure it's full then go for a test drive be sure to alter the cruising rpm alot don't stay at one rpm while cruising and every thing should be fine i would drain the 30 wt at 500 miles and put in whatever you will be using from then on.