Originally Posted by Gearhead999s
I have broken in lots of motors on the dyno with very good results.I have found that most engines will seat the rings in the 1st half hour of running with some variation in load and I have never had an issue with oil usage or blowbye using a rapid breakin and that included 3 previous M-cars.
Good information but much of the break in for a regular production vehicle is in the drivetrain, probably even more is required here than for the engine. Clutch, transmission, driveline bearing, differential, etc. These days engines have seen a break in like procedure at the factory but the drivetrain has had very little to nothing done to it.