I used to do circa 1500km changes on new vehicles ‘back in the day’ but don’t any longer. My personal stance is that machining technologies have evolved to a point, and assembly line process improved so much, the likelihood of having sufficient material in the oil at that early stage to warrant changing is negligible, can understand why people do it though, it’s cheap enough insurance.

to those that do an early change, have you ever sent a sample of that early changed oil off for analysis? If so, what was the result? I’m talking the last few years, not 20 years ago.

am sue the op has all the info they need by now, but I reckon a good road trip like that is a brilliant way to settle in a drivetrain. Good heat cycle, plenty of load changes through terrain undulations, and a wide enough rev range variation simply by going through whatever towns you encounter along the way.