What happens if you drive without engine oil?

1 Answers
LeConnor
07/30/25 8:58am
Lubrication effectiveness will significantly deteriorate. In severe cases, the lack of lubrication can lead to engine seizure. The less oil there is, the more severe the consequences will be. When the engine is restarted, dry or semi-dry friction will occur between the cylinders and pistons, accelerating component wear and greatly increasing startup resistance, making it difficult to start. Below is an introduction to the functions of engine oil: 1. Lubrication: The primary role of engine oil is to provide proper lubrication for engine pistons, bearings, and other components; 2. Sealing: During the "power" stroke, it prevents high-temperature, high-pressure gases in the combustion chamber from leaking into the crankcase through the gap between the piston and cylinder; 3. Heat dissipation: When the engine operates at high speeds, friction between high-speed components generates intense heat. This heat must be absorbed by the oil flowing through the component gaps and carried to the oil pan or oil cooler, where it is dissipated into the air; 4. Rust prevention: Engine oil protects metal components from corrosion; 5. Cleaning: It filters out impurities and metal wear particles generated during engine operation through the oil filter, maintaining the cleanliness of the lubrication system.
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