Quote:
Originally Posted by Baldeagle
Does anyone know what really happens during those first few miles? Is there an actual “pre-break-in” procedure? Are those hard miles? Are they really monitored?
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This s a longstanding mystery, Bald. It's hard to believe that a volume manufacturer, like Toyota or GM, is bench testing and bench-breaking-in each and every one of the hundreds of thousands of engines that it produces each year. Maybe M-B or Porsche do it on some of their models. On the other hand, I suppose they could fire each engine up for a few seconds, once it reaches the end of the production line, just to look for major leaks, etc.
I do not know. This is akin to that other great mystery, i.e., Is there such a thing as break-in oil from the factory?