hmmmm...running in you say...what exactly are you trying to achieve here?*

There maybe half a case for taking it slightly easy on newly plated barrels. But there is near zero case for doing anything to run anything else in and you're likely to do more damage than good running new rings on old bores at low revs for dozens of miles.

Let it rev but don't make it work hard for a few miles and that'll do.

*this is a serious question.
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