Is the impact significant if engine oil exceeds six months?
2 Answers
Engine oil exceeding six months has a considerable impact. Below is more relevant information: 1. Effects: If the engine oil has exceeded six months, it is recommended to replace it, as once oxidized, its sealing and lubricating properties significantly decline. The primary consequence of reduced lubrication is severe engine wear, hence it is advised not to use engine oil beyond six months. 2. Other issues: (1) Prolonged non-replacement of engine oil leads to the accumulation of many impurities, such as iron filings and large dust particles, which not only cause wear but also corrode internal components. (2) Once the engine oil deteriorates and its performance declines, the lubrication of bearings and the cooling function of mechanical transmission parts are lost, adversely affecting the vehicle's optimal driving condition.
I've been driving for over a decade. I used to think exceeding the oil change interval wasn't a big deal, but one time I delayed it for eight months. The engine noise became noticeably louder during startup, and later inspection revealed severely degraded oil with poor lubrication that had caused significant component wear. Since then, I've strictly adhered to changing oil every six months or 8,000 kilometers. Oil deteriorates because it oxidizes and accumulates contaminants, losing its protective properties – especially worse in high-temperature environments. Even if you drive infrequently, change it when the time comes. Trying to save small money long-term might cost you big on engine repairs. Using synthetic oil during maintenance can extend the interval slightly, but don't push your luck. I recommend checking the dipstick monthly – if the color darkens or viscosity deteriorates, take action immediately. Safety first is more important than anything else.
