BMW Oilhead boxer motorbike engines are interesting from a running in point of view. Owners who treat them gently whilst running in, find that they generally consume oil until at least 15,000 miles as the cylinder bores have glazed over.
The advice given to me by my dealer was to run them in to 500 miles without slogging at low revs then start revving through the range to max and no use of fully synthetic oil until the first annual service. Following that advice, none of my bikes used oil.
Exactly the same with the Triumph bikes I had...
The only part of a modern engine that needs any "post assembly" running in are the piston rings. If not properly honed in the car will use oil....
