What Happens If Engine Oil Is Overfilled?
2 Answers
Overfilling engine oil can cause oil splashing, which may lead to oil burning in the combustion chamber and carbon deposits. Additionally, if the engine oil is not changed for a long time, it can become watery and lose its sealing function. Here is some information about engine oil: 1. Different viscosity grades of lubricating oil should be selected based on environmental temperature and vehicle condition. Multi-grade oil is recommended for year-round use. 2. For drivers in southern regions, choosing a lower low-temperature viscosity can improve startup performance and allow the oil to reach the optimal operating temperature and viscosity faster. 3. For drivers in northern regions, the low-temperature viscosity should be selected based on the local winter minimum temperature, ensuring the oil has an appropriate pour point parameter.
Adding too much engine oil is really not good, it makes the engine feel sluggish. The crankshaft stirring in the oil pool increases resistance, resulting in poor acceleration, higher fuel consumption, and an overall less enjoyable driving experience. Foamy oil resembles a foam box, reducing lubrication effectiveness and increasing metal component friction, which leads to faster wear and eventual repairs. Excessive pressure can also cause oil to leak from seal gaps, creating a messy black oil spill that's not only troublesome to clean but may also corrode components and damage seals, leading to costly repairs. Once, I accidentally overfilled during an oil change, and after starting the engine, it sounded strange and felt sluggish. I quickly stopped to check the dipstick, found it above the max line, and had to siphon out some oil using a homemade tube to restore normal operation. For regular maintenance, remember to check the dipstick on a cold engine two or three times to ensure the oil level is between the min and max marks. Don’t overlook small issues that can escalate into major problems—a simple periodic check can save you from unnecessary trouble.
