What is the difference between long-life engine oil and conventional engine oil?
3 Answers
The differences between long-life engine oil and conventional engine oil are as follows: 1. Different characteristics: Conventional engine oil: Reduces wear on engine components and extends service life. Long-life engine oil: Offers higher lubricity than mineral oil, lower friction resistance, better oxidation resistance, and stronger cleaning performance. It also provides superior high and low-temperature performance, longer oil change intervals, and is suitable for more severe driving conditions. 2. Different performance: Long-life engine oil provides noticeable improvements in the following aspects: smoother cold starts, especially in northeastern regions; better fuel economy; extended oil change intervals, approximately 1.5 times or longer than conventional lubricants; longer engine life and lower maintenance rates.
The main differences between long-life oil and conventional oil lie in their service intervals and formulations. Conventional oil typically requires replacement every 5,000 kilometers because it oxidizes and accumulates contaminants more easily, especially under high temperatures. Long-life oil contains more synthetic components and advanced additives, such as antioxidants and detergents, allowing it to last up to 10,000 or even 15,000 kilometers before needing a change. Since I do a lot of highway driving, switching to long-life oil has saved me the hassle of frequent garage visits. The engine noise is noticeably quieter, and it feels smoother overall. Although the initial cost is higher, it proves more economical and convenient in the long run.
From a cost-benefit analysis, long-life engine oil is more expensive, but it requires much less frequent maintenance. I've calculated that while conventional oil is cheaper, it needs to be changed every 5,000 kilometers, potentially three times a year; long-life oil lasts up to 10,000 kilometers, requiring only one or two changes annually. The savings on labor and materials offset the initial higher cost. Plus, the more stable protection helps prevent premature engine wear. For someone like me who is budget-conscious, it's a cost-effective choice.
