No, it really has nothing to do with "heating cycles" either.... There's nothing that's going to "seat" anymore with heat. Engine break-in in a modern engine is all about seating the piston rings properly, so they provide a complete seal around the piston for the life of the engine. To do this, you need pressure to push them against the wall. Varying the RPM will do this pretty well (increased pressure while you're increasing the RPM), but you should take a step further and accelerate hard on each cycle of the throttle. The more load you put on the engine = the more pressure in the cylinders = the more pressure pushing on the rings. Just like that article mentions, the honing on engines is very fine these days, and you have a very short amount of time to properly seat the piston rings. The first few hours on any eninge is critical to how well it will run and how much power it will produce. Going out and idling your engine for those first few hours is literally the worst thing you could do....
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