Re: Break-In / Running In / Oil Change
All parts in the engine will have some form of wearing in to do before a perfect fit occurs. No mass produced car that i know off is able to provide a factory run in program to allow all the engines to have perfect fit. During running in, the parts wear out abnormally fast and wear down until the surfaces match. The worn particles are either trapped in the oil filter or are carried in the oil as a suspension. Therefore, it is advisable to change the oil at 1000km to clear these contaminants and thereby leading to better engine life. As to how to run-in, just keep you engine under 2/3 of max revs. ~4000rpm. road speed is not a factor. Brakes are usually bedded in by the time the car is delivered to you.
2 cents worth