米国有的，叫 break-in，现在机油和润滑剂改善很多，所以不注重了

en.wikipedia.org/wiki/Break-in_(mechanical_run-in)

Do you still have to “break in” a new vehicle today?

In a word, no. Lubricants and engine oil have come a long way, compared to the products of old; they protect metal parts much better than their predecessors. In addition, the steel and aluminum used for engine parts come from the factory already conditioned and treated, thus ready to run.

The only caveat comes with that first oil change. Make sure you change your new car's oil and filter for the first time at 1500 miles unless otherwise recommended by the manufacturer. The reason? Metal has worn off while mating surfaces were established, and those metal scraps need to be removed from the engine before they cause long-term damage.

完整参考： www.thecarconnection.com/news/1092906_do-you-still-have-to-break-in-a-new-car