What Happens If a Car Runs Out of Engine Oil?

[MayaLee]

Running out of engine oil can lead to the following symptoms: 1. The lubrication effect will significantly deteriorate. In severe cases, the lack of lubrication can cause engine seizure, and the consequences worsen as the oil level decreases. 2. When the engine is restarted, dry or semi-dry friction may occur between the cylinder and piston, accelerating component wear. The increased resistance during startup also makes it much harder to start the engine. Here are the functions of engine oil: 1. Reduces wear: There is rapid relative sliding between the piston and cylinder, as well as between the crankshaft and bearings. Engine oil prevents excessive wear of these components. 2. Cools the engine: Engine oil assists the radiator in cooling the engine by dissipating heat away from the engine. 3. Seals and prevents leaks: Engine oil forms a seal between the piston rings and piston, reducing gas leakage and preventing contaminants from entering. 4. Dampens vibrations: When pressure in the engine cylinder rises sharply, sudden stress is placed on the piston, piston pin, connecting rod, and crankshaft bearings. Engine oil lubricates these bearings, cushioning the impact load.