What does roz/ron90-98 mean?

[OLincoln]

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.

[StMadison]

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.

[KayleeAnn]

As an automotive tester, my understanding of RON90-98 is the range of gasoline octane ratings. RON stands for Research Octane Number, which measures a gasoline's ability to resist knocking in an engine. The range from 90 to 98 covers options from regular to high-performance, with 90 suitable for older low-compression engines and 98 designed for turbocharged or sports vehicles. Higher octane ratings can optimize combustion efficiency, reduce engine damage, and prevent increased fuel consumption. In practice, I often test vehicle performance under different RON levels: too low may cause shaking or delayed acceleration; too high offers no benefit and isn't cost-effective. Car enthusiasts should choose based on their vehicle manual and driving habits, not blindly pursue higher ratings. For economical choices, 95 is a popular option, balancing cost and performance while extending spark plug life.

[LaMaggie]

Having repaired cars for decades, RON90-98 simply indicates the octane rating of gasoline. Automotive gasoline is graded by these numbers, where higher values denote better anti-knock performance, making them suitable for modern high-pressure engines. For regular cars like sedans, RON95 works perfectly fine; high-performance vehicles require 98 to prevent knocking. Don't arbitrarily opt for higher grades—it's a waste of money and may lead to carbon buildup. When choosing, monitor the engine's response; if you hear abnormal noises, try switching to a different rating. For cost-effectiveness, always refer to the manufacturer's recommendation.