What are the effects of adding 0.5 liters more engine oil?
2 Answers
Adding too much engine oil will increase the resistance of engine operation, affect the fuel consumption of the vehicle, increase engine noise, and raise the oil pressure in the crankcase. In severe cases, it may lead to oil burning. The specific functions of engine oil are as follows: 1. Reducing friction and high temperature: A sufficiently thick oil film separates the surfaces of relatively sliding parts, thereby reducing wear. 2. Sealing effect: Engine oil can form a seal between the piston ring and the piston, reducing gas leakage and preventing external pollutants from entering. 3. Anti-rust effect: Lubricating oil can adhere to the surface of parts, preventing contact with water, air, acidic substances, and harmful gases. 4. Buffering effect: When the pressure at the engine cylinder port rises sharply, suddenly increasing the load on the piston, piston pin, connecting rod, and crankshaft bearings, this load is transmitted and lubricated through the bearings, cushioning the impact load. 5. Cleaning effect: Good engine oil can carry carbon deposits, sludge, and worn metal particles from engine parts back to the oil tank through circulation, and by the flow of the lubricating oil, it washes away dirt generated on the working surfaces of the parts.
I've been working on cars for many years, and adding an extra 0.5 liters of oil might not sound like much, but it's not good for the engine. Excess oil can cause foaming, which reduces lubrication effectiveness and accelerates wear on internal engine components, such as piston rings or crankshaft bearings. I've also encountered fellow car enthusiasts whose engines started humming and felt sluggish with increased fuel consumption after overfilling oil, making driving noticeably less smooth. On long trips, foamy oil performs even worse under high temperatures, leading to unstable oil pressure and potentially causing oil leaks from seals. I recommend checking the dipstick level immediately and keeping it between the min and max marks. If you find too much oil, take it to a professional shop to remove the excess without delay. Neglecting this small issue over time can lead to hefty repair bills.
