I believe breaking in a new car hard or soft...syn. or dino is really a personal preferences. I don't think there are "actual" data out there that can prove that one is better than the other.
But the bottom line is, there's no harm going by the book. RPM underr 4K and Redline states on the bottle "not for new engine, allow for 3K break in period".
Yes there are some car that comes with syn. oil. But my thought is, there's no harm following the book.
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