Is it okay to not change the engine oil for 2 years?

[MacJuliette]

Not changing the engine oil for 2 years is problematic. Prolonged failure to replace the engine oil can lead to oil deterioration and reduced lubrication effectiveness, accelerating wear and tear on internal engine components and affecting the engine's lifespan. Deteriorated oil can form sludge, which may clog oil passages, preventing the oil from circulating within the engine. The impacts of not changing the engine oil for an extended period include: 1. Reduced sealing effectiveness: High-quality oil with appropriate viscosity can effectively seal the gaps between the cylinder block and pistons, preventing gas leakage. If the oil is not changed for a long time, it can become watery, lose its sealing function, and contain a large amount of metal debris and gummy deposits, severely affecting the engine's lifespan and stable operation. 2. Diminished cooling effect: Oil has much higher heat absorption and thermal conductivity than water. If the oil deteriorates significantly, its cooling function can be greatly reduced.

[AlexisMarie]

As someone who frequently deals with engines, I've seen many cases where car owners neglect oil changes, leading to serious problems. For example, a friend of mine didn't change the oil for two years, causing it to thicken and lose its lubricating properties. This resulted in increased internal engine wear, stuck piston rings, and ultimately a costly overhaul that cost over ten thousand yuan. The primary functions of engine oil are to reduce friction, cool components, and clean impurities. If not changed regularly, the additives in the oil degrade, and accumulated impurities lead to sludge buildup, clogging oil passages and causing engine overheating or even cylinder scoring. Don't underestimate this issue—it also reduces fuel efficiency and increases emissions. I recommend changing the oil every 5,000 to 10,000 kilometers or at least every six months, adjusting based on driving habits to avoid major losses over minor savings.

[VanBrianna]

I remember driving for ten years and once neglected to change the oil for two years. As a result, the engine noise increased and acceleration became sluggish. The repair shop found excessive impurities in the oil, leading to a clogged oil pump, and the cleaning cost wasn't cheap. Engine oil is like the blood of the engine, providing lubrication and protection to critical components. Over time, the oil oxidizes and deteriorates, losing its effectiveness, which can easily cause friction, heat, and wear on engine parts. Even if the car is driven less and parked in the garage, the oil still absorbs moisture and dust, accelerating its degradation. Personally, I think regular oil changes are a small investment—a cost of a few hundred yuan can prevent the engine from retiring early, saving a lot of money and ensuring safety.

[AustinMarie]

Skipping oil changes will definitely cause problems. When I was learning to drive, my instructor emphasized that engines rely on oil for maintenance. After two years, the oil viscosity changes, impurities accumulate, and lubricity deteriorates, leading to severe component wear, increased noise, and higher fuel consumption. It's recommended to change the oil every six months or 11,000 kilometers. A simple visit to the shop takes just half an hour—don't be lazy, or you'll risk a breakdown and unnecessary trouble.

[LeJulianna]

As a housewife, I prioritize cost and reliability in car maintenance. Not changing the engine oil for two years may seem like saving money on the surface, but it actually poses significant risks. Aged oil loses its lubricating properties, accelerating internal engine friction. Over time, a single repair can cost thousands, ten times more expensive than an oil change. Regular oil changes are like routine health check-ups for the engine, reducing the likelihood of problems and ensuring safety when picking up the kids—no breakdowns on the road. Dirty oil also affects car performance, leading to sluggish acceleration and more complex repairs.