Originally Posted by LS1EB
So I have been heavily involved in the off-road world for quite some time and have set up several ring & pinions for myself and friends. Whenever you do a setup you always change your diff oil after the first 500 miles because of all of the small shavings that occur during break in and seating the teeth. Same thing goes for building a motor, after the first few hundred miles you change the oil due to the bearing break-in and such. There is no mention of this anywhere in the manual, just the typical change intervals. Pardon me as this is my first new vehicle ever, but do they perform some sort of accelerated break in at the factory and change the oil there? I know itís kind of a newb question and I have searched and have found that the break-in oil changes are not necessary but just curious as to why?
If you have concerns about engine break in and attendant metal particles - just change the oil filter. For the pittance of an oil filter, change it once or twice. Consider putting in a magnetic oil drain plug. What can it hurt? It's your engine. Maybe even put on a high quality filter for particle capture. What can it possibly hurt? Or even a magnetic oil filter strap.
Just keep in mind, modern engine assembly plants have the whole mettalurgical part casting and CNC, lathe and machining, balancing & quality control issues fully in hand. Extensive concern over engine break-in is not really a topic anymore.