Yes, a cracked block.
Probably around $1200.
A cracked head or a cracked block can also cause this.
Blown head gasket
cracked head or a cracked block cracks may be hard to see with the naked eye
The radiator hose is cracked near the clamp; or the clamp is loose; or the thermostat housing gasket is worn.
Cracked head Cracked block Head gasket installed incorrectly
A cracked head could also at fault.
A blown gasket can be repaired by replacing the gasket...if you are talking about the head gasket, then you have to remove the cylinder head from the engine block and replace the gasket that is inbetween them. Cracked heads generally have to be replaced because they are made of aluminum which cannot be repaired permanently once it is cracked.
bad valve, blown head gasket, warped or cracked head, cracked piston, or failed rings.
blown head gasket or cracked block blown head gasket or cracked block
Blown head gasket, cracked head or cracked block. Busted head gasket; cracked cylinder head; broken piston; or bad oil pan gasket if driving thru high water.
Engine will possibly overheat, coolant will mix with the oil, and eventually destroy the engine. You must replace a cracked head gasket.