To the "Normal High Oil Consumption in Break-In" statement by MerC: Our "New" engine is a reman from MerC Remanufacturing, using a "pre-owned" 5.7, bored .040 over to .357 CID with the rest new. I think they do it to circumvent pollution rules.
Anyhow, I've changed the oil twice and run 170 hours since it was installed at the end of 2015. Been trying to change it around 50-75 hours, and I'm using their Syn/Blend 25-40 oil. In those hours, I've added about 02 quarts in "make-up" oil. So their statement does not match at least this customer's experience.
But you were going to go run it, monitoring the oil level now that you know it's starting out full. How's that part going for you?