Why Do Cars Need Oil Changes?
2 Answers
Cars need oil changes for the following reasons: 1. To improve and enhance lubrication for the friction components in the engine; 2. To extend the engine's service life; 3. To improve the engine's lubrication conditions and reduce friction in moving parts. Precautions for oil changes include: 1. Perform the change when the engine is warm to ensure thorough drainage of old oil; 2. Add oil and ensure the correct amount is used; 3. After adding oil, start the engine and check for any leaks. The steps for an oil change are: 1. Lift the car, remove the underbody cover, and place a container of about 10 liters under the drain plug; 2. Unscrew the drain plug, use an air gun to blow into the oil filler for two minutes, then tighten the drain plug and wipe it with a tissue to check for leaks; 3. Reinstall the underbody cover, lower the car, and use a funnel to add oil through the filler port.
Engine oil is the guardian angel of the engine, something I’ve learned well over years of driving. Engine components constantly rub against each other at high speeds—without oil, it’s like bone grinding against bone, causing wear and tear. The oil coats these parts, reducing friction and allowing smooth movement. It also dissipates heat; an engine can reach temperatures of several hundred degrees, risking deformation or even cracking, but the oil carries away the heat to cool it down. Additionally, impurities accumulate over time, and the oil traps these contaminants, keeping the internals clean. Over time, the oil turns black and loses effectiveness—not changing it is like bathing in dirty water, harmful rather than helpful. Typically, it should be replaced every 5,000 miles, doubling the engine’s lifespan while saving money and hassle. Once, my neighbor delayed an oil change for six months, resulting in a seized engine and a thousand-dollar repair bill. Now, I stick to regular maintenance—my engine runs smoothly and quietly, worry-free even on long trips. A small investment yields big returns, and it’s absolutely worth it.
