Invest a few dollars in a high quality filter, with a well designed anti-drainback valve. (Eg. avoid the radioactive 'Orange Can of Death.') PureOne, Wix, Mobil, and several other 6~10$ filters are well built, and generally have a well designed, functional ADBV. You don't want the engine starving while an empty filter delays oil flow.
If you live in a cold climate, buy a block heater, and use 0w-x oil in winter. Look at the oil's pour point - the lower the better.
Those cars that were run w/o oil may have kept going, but I'm sure they were VERY torn up...
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