What does roz/ron90-98 mean?
2 Answers
It represents the gasoline grade, indicating the octane rating range between 90 and 98 can be used. Relevant introductions are as follows: 1. Composition: Gasoline is composed of isooctane and heptane, and the proportion of isooctane is the actual octane rating of the gasoline. For example, the so-called 97-grade gasoline means isooctane accounts for 97% of the fuel composition, and heptane accounts for 3%. 2. RON: The value of RON/ROZ can directly reflect the compression ratio that the gasoline can withstand. When the gasoline quality is good, without impurities and other chemical substances that should not be contained, the RON value of gasoline is the most scientific, accurate, and commonly used standard to reflect the actual performance of gasoline.
I remember when I first learned to drive, the instructor emphasized the importance of gasoline octane ratings. Roz or Ron 90-98 actually refers to the range of Research Octane Number (RON), from 90 to 98. The higher the number, the better the gasoline's anti-knock performance. Simply put, good anti-knock performance means the engine is less likely to produce knocking sounds during compression and combustion, resulting in smoother starts, less noise, and improved power. For daily driving in a regular family car, RON 95 is sufficient and cost-effective. However, if you're in high-altitude areas or frequently drive on highways, higher RON 98 can reduce knocking and protect engine components. But don't blindly choose the highest octane—it's a waste of money and may not be effective. The owner's manual will specify the recommended rating. Pay attention to whether the engine light comes on when refueling to determine what's best for your car. In short, this range helps car owners choose the right gasoline to ensure vehicle performance and longevity, so avoid switching grades arbitrarily.
