What are the signs of severe engine oil shortage in a car?

[MacReed]

When the engine lacks oil, the oil warning light will first illuminate. If the situation is severe, the vehicle may experience shaking. You should immediately pull over and turn off the engine, otherwise there is a risk of engine failure, and professional assistance should be sought. Engine oil performs multiple functions within the engine, including lubrication, cleaning, sealing, and cooling. When the engine is low on oil, the following symptoms may occur: Poor lubrication of the engine's friction surfaces: This can lead to abnormal shaking, reduced power, and in severe cases, may cause engine "bearing seizure." Engine "bearing seizure" refers to the burning and erosion of the crankshaft bearings and bearing bushings due to insufficient lubrication, which manifests as abnormal engine shaking until the engine stalls. After stalling, the engine will not be able to restart. Malfunction of the engine's variable timing solenoid valve: This can result in the inability to precisely control the engine's intake and exhaust valves, leading to operational abnormalities, reduced power, and increased fuel consumption, among other symptoms.