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If this engine is "without oil" it can not be turned over, even one time. What they might mean is that the oil has been drained, but there is still oil in then engine. There has been only one creditable example of an engine running with the oil drained out of the sump and that's from Militec-1. That little stunt was supervised by their customer, the US Government and had to do with vehicles running after combat damage. Most of these examples are a hoax.
You obviously have never built an engine before.
Years ago I use to go to a car show where they'd pull a running small block chevy and small block ford from a junkyard. Drain the oil, and run them at a fairly high rpm until they locked up. People would guess as to how long each engine would run, closest would win something. I don't remember exactly how long each one ran, but it was more then a couple minutes.