Multiple cylinders show signs of rust and corrosion, indicating that the engine has been neglected for a long time.
Blown head gasket is not the cause of the engine failure, as there is no evidence of gasket failure.
Possible overheating caused the head to warp and lift, leading to coolant leakage and rust formation.
The extreme corrosion in the engine indicates the need for a thorough cleaning and treatment.
Further inspection is required to determine if there are any cracks in the cylinders or heads.