1. Loss of Lubrication: Without engine oil, the sliding and rotating metal parts of the engine lose their lubrication, leading to increased friction between the components.
2. Overheating: The lack of lubrication generates excessive heat due to metal-to-metal contact. This can result in overheating of engine components, causing thermal damage and even melting of vital parts.
3. Rapid Wear and Tear: The metal surfaces subjected to friction without lubrication will wear down quickly, leading to increased clearances and reduced mechanical efficiency.
4. Engine Seizure: As wear increases and temperatures escalate, the components can seize, meaning they can no longer move. This usually leads to catastrophic engine failure. Pistons and rings can seize within minutes without lubrication.
5. Damage to Engine Bearings: Engine bearings rely on the presence of oil to manage stress and heat. Running without oil causes overheating, which can melt and disintegrate the bearing material, leading to severe damage.
6. Turbocharger and Supercharger Damage: If a vehicle is equipped with these devices, they can be severely damaged if they don't receive proper oiling and cooling.
7. Oil Pump Damage: The oil pump, which circulates oil through the engine, has its own cooling system. Running without oil can damage or destroy the oil pump.
8. Coolant Contamination: Without oil to help seal components, coolant can leak into the combustion chamber, causing the engine to overheat further and leading to a blown head gasket or even engine cracks.
9. Electrical Issues: Extreme temperatures can damage electrical components like sensors, wiring, and even the engine control module (ECU).
10. Emission Problems: Running without oil causes incomplete combustion and leads to increased emissions of harmful substances due to increased friction.
Overall, running a car without engine oil results in catastrophic component damage, engine failure, and substantial costs for repair or replacement.
