What are the effects of insufficient engine oil in a car?
2 Answers
If the engine oil is insufficient, it will lead to poor lubrication of various component surfaces, increase friction resistance, and accelerate component wear. In severe cases, it may cause crankshaft burning and bearing burning. Engine oil, often referred to as the "blood" of a car, plays multiple roles including lubrication and friction reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, as well as shock absorption and cushioning. Below are relevant details about the consequences of insufficient oil: 1. Insufficient oil will result in poor lubrication of component surfaces, increased friction resistance, and accelerated wear. Severe lubrication failure can cause engine overheating, leading to serious mechanical failures of major moving parts, affecting the engine's lifespan, or even rendering it unusable. 2. Low oil pressure can severely damage the engine in a short period. For example, prolonged poor lubrication of the cylinder walls may result in cylinder scoring; inadequate lubrication of the crankshaft main bearings and connecting rod bearings can lead to bearing burning and seizure in severe cases. Therefore, when the oil pressure gauge indicates low pressure (or even zero) or the oil pressure warning light comes on, it is essential to stop the vehicle for inspection and promptly address the issue.
A few days ago, my car's engine noise suddenly increased, and I clearly felt a lack of power when stepping on the accelerator. After checking for a while, I found that the engine oil was low. If there's insufficient engine oil, the lubrication effect deteriorates, and internal engine components are prone to metal friction. Over time, core parts like the valves and crankshaft will wear out, and in severe cases, it may directly lead to bearing seizure or cylinder scoring. Cooling will also be problematic—without enough oil, heat can't be dissipated. My friend's car broke down on the highway due to overheating after a long trip with low oil. Now, during every maintenance check, I closely monitor the oil dipstick because replacing an engine costs dozens of times more than changing the oil.
