Is 92 octane gasoline ethanol or pure gasoline?
2 Answers
E92 gasoline is based on 92 octane gasoline with the addition of some ethanol and additives, while 92 octane gasoline is unleaded gasoline. Understanding gasoline octane ratings: Gasoline octane ratings are marked based on the level of octane. The higher the gasoline grade, the higher the proportion of isooctane. For example, 93 octane gasoline has a higher proportion of isooctane than 92 octane gasoline. The choice of gasoline grade mainly depends on the engine compression ratio. The higher the compression ratio, the higher the fuel octane rating should be. E92 only contains 10% alcohol. If you usually use 92 octane gasoline, mixing with E92 will only result in a decrease in power and a shorter driving range. If you usually use E92, mixing with 92 octane gasoline may result in improved power and a longer driving range. Precautions for refueling: Do not change the octane rating of the gasoline arbitrarily. If you switch to a lower octane rating, it may cause premature combustion of the gasoline, leading to engine knocking. In addition, incomplete combustion of the gasoline will lead to increased carbon deposits, which can block the conduits and nozzles, as well as cause decreased vehicle power and increased fuel consumption.
The octane rating of 92-octane gasoline (labeled as 92) indicates its good anti-knock performance, ensuring more stable engine operation without vibration during driving. In China, regular 92-octane gasoline is mostly pure gasoline without ethanol additives. Having driven for over a decade, I always check the label to confirm "ethanol-free" before refueling for peace of mind. However, some regions have adopted policy changes—for instance, Shandong and Henan provinces promote eco-friendly vehicle fuels by introducing E10 92-octane gasoline blended with 10% ethanol. While E10 ethanol gasoline reduces emissions, it may increase fuel consumption or corrode metal components, especially in older vehicles. I recommend checking the pump label before refueling; avoid using ethanol-blended gasoline for vintage cars to prevent issues. Opting for pure gasoline ensures hassle-free maintenance, but if environmental concerns are prioritized, the blended version can be tried—just avoid mixing fuel types arbitrarily.
