
When the engine oil pressure is insufficient, the main reasons are as follows: 1. The engine oil storage is too low, causing the lubrication system to have no oil or insufficient oil: refill the oil in time to ensure sufficient oil storage. 2. The oil is dirty or too viscous, preventing the oil pump from effectively sucking and pumping the oil: the oil needs to be replaced promptly. 3. The oil is too thin or becomes thin due to high engine temperature: thin oil may leak from the gaps between the engine's friction pairs, leading to insufficient oil pressure. It is necessary to replace the oil or repair the cooling system in time. 4. The oil pressure sensor is damaged: the normal oil pressure range should be maintained between 150~350kPa.

That day, the workload in the workshop was particularly heavy when a car owner rushed in saying the oil pressure warning light was on. I explained to him that insufficient oil pressure means the engine lubrication oil pressure isn’t high enough, leading to inadequate lubrication, which can easily cause overheating or severe wear. Common causes include low oil level—possibly due to leaks or not topping up in time, aging or damage to the oil pump preventing proper pressure buildup, a clogged filter affecting oil flow, or the oil being too thin from using the wrong type. I advised him to stop the car immediately and check the dipstick. If the oil level is normal but the light remains on, he should visit a professional shop to test with a pressure gauge. Driving forcefully under such conditions would inevitably lead to an engine overhaul sooner or later. During maintenance, it’s crucial to change the oil and filter regularly, and with older vehicles, paying extra attention to these details becomes even more important.

During my last road trip, I encountered an insufficient oil pressure warning, which was really nerve-wracking. It meant the engine oil pressure was too low to effectively lubricate the internal components. After pulling over to check, I noticed the oil level had dropped significantly—likely due to a leak or pump issue. I immediately called a tow truck to take it to the repair shop, spending a small amount to avoid a major overhaul. Regular driving habits should include checking the oil dipstick periodically to maintain proper levels and using the correct viscosity grade of oil, with extra vigilance during seasonal changes. Ignoring persistent pressure issues can lead to severe risks like engine overheating and failure, compromising safety and increasing costs. New car owners, in particular, shouldn’t overlook those dashboard warning lights.

During my daily commute, my old car once experienced insufficient oil pressure, which simply means the lubrication system lacked adequate pressure to distribute oil evenly. My husband warned that it could be due to an oil leak or pump failure, advising me to stop and check immediately or seek help when the warning light comes on. For prevention, regular maintenance is crucial, especially ensuring the oil is sufficient and clean before long trips to avoid unexpected repair costs.


