As long as you let it. It will not fix itself. I'm not sure this was your complete question.
Yes
Are you talking about a crack in the engine block? Sorry, it's not repairable.
no
It only hurts because you've been sitting on it too long.
as long as it is not the winter... then it will freeze. and never put water in a hot empty radiator or you will crack the block and you will be very sorry.
yes
If the crack is weeping water (crack is next to water jacket) you could try temp fix products like chemiweld or irontite
As long as you make it take.
It should not
Lack of anti-freeze in sub-freezing temperatures. The water in the block freezes and expands.
Antifreeze helps by not allowing the coolant to freeze and possibly crack the water passages of the block.
The freeze plugs are designed to blow before the engine cracks on a 1997 Aurora. The process is not foolproof, and the block could still possibly crack.