Originally Posted by CanAutM3
...my understanding is that the break-in oil should be changed before the engine is operated beyond the specified break-in limitations. The different composition of the break-in oil and any contaminants present (manufacturing residue) may have a negative impact on the engine.
That's what I understand, too.
Previous car I kept below 5500rpm for the first 1200 miles. I also refrained from WOT + short-shifting. It took a lot of restraint!
After 1200, I never had any issue of needing to replace oil (except once when the gasket on the oil cap got creased). Even after a hot track weekend. Not in the 32,000 miles before trading it in.