[ahausheer]

You can't break in an engine unless it's outside the car. You break in a CAR, not the engine. The break-in procedure in the manual is not saying this is the break-in for the motor, it's taking everything into account. There are tons of other considerations, particularly, the transmission. There will be metal shavings in the transmission oil that need to be filtered, perhaps speed and load needs to be low at first to break in the gears and prevent metal shavings from becoming detrimental. I also wonder if the gears need to hone or bed each other. All im saying is follow the stupid manual, perhaps it is a compromise on certain engine components but it must be better overall.