Is There Harm in Using Mineral Oil for More Than Half a Year?

[Nguyen]

There is harm. The service life of mineral oil is typically half a year or 5,000 kilometers. Exceeding half a year, even if the car is not driven frequently, the oil will oxidize due to exposure to air, leading to a decrease in total base number, acidification of the oil, and ineffective formation of a protective oil film. Here is additional information: 1. Mineral oil: Derived from crude oil, mineral oil is usually very low in cost. However, because the mineral oil base is prone to oxidation, various imported additives are added to it, with a service life of approximately six months. 2. Semi-synthetic oil: Although more expensive to refine, it has excellent oxidation resistance, making it a highly durable long-life oil with a service life of about twelve months. Considering the balance between price and quality, semi-synthetic oil has the widest range of applications. 3. Full synthetic oil: Chemically synthesized oil, it can maintain lubrication even under conditions where the base oil fails.

[Robin]

Using mineral oil for over half a year can indeed cause damage. As someone frequently involved in vehicle maintenance, I've seen many such cases. The base structure of mineral oil isn't as stable as synthetic oil, making it prone to oxidation and deterioration over time. Prolonged use leads to the breakdown and deactivation of additives, causing a sharp decline in lubrication and protection. Engine components operating under increased friction may experience accelerated metal wear, potentially leading to higher fuel consumption or degraded performance. I recommend regularly checking the oil condition, such as changing it every six months, and not delaying too long. Especially with frequent driving or in hot environments, oil ages faster. Neglecting this could result in major engine repairs, with costs far exceeding simple oil change expenses. Developing a habit of timely maintenance is wise to ensure smooth and safe vehicle operation.

[OMia]

From my personal car ownership experience, I can tell you that not changing mineral oil for over half a year can indeed damage the engine. There was one time when I was lazy and didn't change the oil for several months. Later, the engine started making strange noises, and during repairs, it was found that the oil had turned black and thickened, significantly weakening its protective function. The base of mineral oil is not resistant to aging; it degrades over time, reducing lubrication capability and increasing the risk of internal wear. As a long-time driver, I now insist on changing the oil every six months or 5,000 kilometers, never delaying. This is the only way to extend the engine's lifespan and avoid sudden mechanical failures. Especially in urban congestion with short-distance driving, the oil is under greater stress and more prone to failure. Remember, changing oil is a small matter, but delaying it can lead to big problems. Protecting your vehicle is worth paying attention to.

[StAnna]

Using mineral oil for over six months may cause harm, which I believe warrants caution. As the oil degrades, its lubricating effectiveness decreases, leading to increased friction and wear on engine components. Prolonged use under such conditions may result in higher fuel consumption or premature engine failure. As someone who prioritizes vehicle safety, I emphasize the necessity of timely oil changes. Adhering to a six-month maintenance schedule can effectively prevent potential issues. Don't overlook this small but critical aspect—it directly impacts driving reliability.

[DelDominic]

Using mineral oil for over half a year indeed poses high risks and may damage the engine. From an economic perspective, I believe short-term savings are not worth long-term worries. Mineral oil has poor durability, and its lubrication performance deteriorates after exceeding the recommended period, leading to accelerated engine wear. This can significantly increase repair costs. As a pragmatic person focused on optimizing expenses, I recommend strictly adhering to the oil change cycle—replacing it every six months is the most cost-effective choice. This approach ensures stable vehicle operation and safe driving.

[MacLilliana]

In today's driving scenarios, using mineral oil for more than six months may cause harm. It oxidizes and ages more easily than synthetic oil, leading to reduced lubrication protection, which can cause engine noise or wear. As someone who values car performance, I believe sticking to an oil change every six months is crucial. Keeping the oil fresh can optimize vehicle efficiency and reduce emissions. Don't let engine damage occur due to neglecting the schedule—regular maintenance is fundamental protection.