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What are the types of automotive engine oil?

2 Answers

AmeliaLynn

07/25/25 3:55am

Automotive engine oil is divided into three types: conventional mineral oil, semi-synthetic oil, and full synthetic oil. Mineral oil is a commonly used lubricant in the market; semi-synthetic oil is made from semi-synthetic base oil; full synthetic oil is the highest grade of engine oil. Automotive engine oil can lubricate to reduce wear, help cool the engine, and clean dirt from engine parts. Mineral oil, derived from crude base oil, generally falls below the SJ grade and is typically only suitable for low-end vehicles or some new cars; semi-synthetic oil is a blend of conventional oil and synthetic base oil, with additives forming a quasi-synthetic oil, generally suitable for non-turbocharged mid-range vehicles; full synthetic oil has excellent high-temperature volatility resistance and deposition capability, making it suitable for high-temperature, high-speed, high-compression ratio engines, such as turbocharged engines.

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Enid

08/10/25 5:10pm

Hey, when it comes to car engine oil, I know it's mainly divided into three types: mineral oil, semi-synthetic oil, and full synthetic oil. Mineral oil is the most basic and cheapest, directly refined from petroleum, suitable for older cars or daily commuter vehicles, but the downside is that it's not durable—it might degrade after just three to five thousand kilometers, requiring more frequent oil changes. Semi-synthetic oil is a middle-ground option, with some synthetic additives that enhance protection and lifespan, priced moderately. I use it for my small sedan, finding it both economical and reliable, lasting about seven thousand kilometers before needing a change. Full synthetic oil is the premium choice, entirely chemically processed, offering excellent high-temperature resistance and protection, especially suitable for new car models or long-distance driving. Although more expensive, the oil change interval can be extended to ten thousand kilometers, making it hassle-free in the long run. When choosing engine oil, don’t forget to check the viscosity recommended in the owner’s manual to avoid engine issues.

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