Congrats on the new ride.
I can tell you this. While you research this topic, you'll find people saying that you have to strictly adhere to the break-in guidelines while there will be other extremes that say the engine is already broken-in and you can drive like you stole it immediately. Some even say your engine will develop more power in the long run if you drive it harder initially.
I myself was somewhere in-between these extremes. I couldn't resist some spirited driving but I didn't really go over 6k RPM until a 1000mi on the odometer.
****The only evidence I have that more conservative driving MAY be beneficial is engine oil temps. I was breaking in my car around the same time the oil overheating issues were consuming everyone's attention. I can honestly say my car started running cooler oil temperatures after about 1500mi. Whether this is related to decreased engine friction after 'break-in' is hard to say, but it suggests that the engine settled down after those initial 1500mi. I know AK and a few other guys noticed the same thing with their temps and mileage.
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2013 Cadillac V-Wagon, RIP Z
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