Remanufactured

• According to University of Michigan Center for Sustainable Systems, reconditioned engines are basically remanufactured. The old engine is taken down in a factory setting and each part is remanufactured by expert machinists to restore the engine to a like new condition.
  
  

Rebuilt

• Many garages and auto repair shops offer engine rebuild service. The engine is stripped down to determine which parts are defective and reassembled, replacing only the defective parts. According to Auto Inc, replacing a blown engine with a factory reconditioned engine is the best value choice for the car owner.
  
  

Causes

• The most common causes of engine failure are overheating and engine wear due to poor maintenance. Keeping the fluids filled and changing the oil and oil filter regularly reduces the chance of overheating, and minimizes wear on engine parts.