1. Oil Pan: A significant portion of the oil may end up in the oil pan. When an engine blows, internal components can break or rupture, causing oil to leak into the pan.
2. Pistons and Cylinders: As the pistons move within the cylinders during combustion, they have oil rings to control oil consumption. If these rings are damaged or worn, excessive oil can enter the combustion chamber, leading to oil burning.
3. Engine Block and Head: Cracks in the engine block or cylinder head can allow oil to leak out. This can happen due to overheating or severe stress on the engine.
4. Valve Seals: Worn or damaged valve seals can cause oil to seep into the combustion chamber, resulting in oil consumption.
5. Oil Filter: If the oil filter is clogged or compromised, it can limit the flow of oil through the engine, leading to oil starvation and potential engine damage.
6. Oil Cooler and Lines: If the engine has an oil cooler or oil lines, they can develop leaks, causing oil loss.
7. Exhaust System: Some of the oil that enters the combustion chamber may be burned off and released as exhaust smoke, contributing to the smoky appearance often seen in blown engines.
8. External Leakage: In severe cases, oil can leak externally through damaged gaskets, seals, or cracks in the engine block or oil pan.
9. Piston Ring Land Damage: If the ring land area of the piston (where the piston rings are seated) is damaged, oil can leak into the combustion chamber.
10. Oil Filler Cap or Dipstick: A loose oil filler cap or a damaged dipstick can allow oil to be expelled from the engine under pressure.
