Does Expired Engine Oil Cause Significant Damage to Cars?
2 Answers
Using engine oil that has exceeded its shelf life can cause significant damage to the car's engine, such as poor lubrication and compromised cooling effects. Below is extended information about engine oil: 1. Types: Engine oil is categorized into three types: full synthetic oil, semi-synthetic oil, and mineral oil. 2. Oil Specifications: The packaging of engine oil typically displays codes like 5w30, 0w20, or 5w40, which indicate the oil's specifications. The 'w' stands for 'winter,' meaning the oil is suitable for use in winter conditions. 3. Consequences of Insufficient Oil: When the oil level is insufficient, it leads to poor lubrication of the friction surfaces between engine components. Inadequate lubrication increases the wear and tear of parts. Additionally, engine oil plays a crucial role in cooling and heat dissipation. Insufficient oil reduces the engine's cooling capacity, leading to overheating, which can further cause issues like bearing corrosion and cylinder scoring.
I've been driving for over a decade, and encountering expired engine oil is no joke. My friend once neglected to change his oil for six months, and when he drove, the engine roared loudly like a tractor, with fuel consumption skyrocketing. The mechanic opened it up and found severe internal engine wear—pistons and bearings were all scarred. When engine oil expires, its additives fail, leaving parts unprotected. Increased friction accelerates component wear, and sludge buildup can clog oil passages, causing the engine to overheat. He ended up spending thousands on major repairs, when an early oil change could've cost just a hundred or so. I recommend regularly checking the dipstick—dark, thick oil is a warning sign. Don't wait for major issues. Driving safety comes first, and oil changes can't be delayed.
