What does 98 gasoline mean?

[VanWyatt]

98 gasoline is the highest-octane premium automotive fuel, consisting of 98% isooctane and 2% n-heptane. 98-octane gasoline is suitable for vehicles with engine compression ratios above 11.6. Advantages of 98-octane gasoline: 1. Excellent anti-knock performance: The strong anti-knock properties of 98-octane gasoline result in smoother engine operation, reduced wear, and better engine protection. 2. Higher calorific value: Compared to lower octane fuels, 98-octane gasoline has superior combustion characteristics, enabling more complete fuel combustion and delivering higher combustion efficiency. 98-octane gasoline also improves fuel atomization capability, thereby reducing fuel consumption.

[VanDiana]

I saw this question and wanted to chime in. 98-octane fuel actually refers to a grade level of gasoline—the higher the number, the better the quality, especially in terms of anti-knock performance, preventing premature ignition under high engine pressure. This makes it ideal for high-performance cars, like sports cars or turbocharged engines, as it protects the engine from damage and ensures smoother, more powerful driving. However, regular family cars don’t necessarily need 98-octane; 95 or 92 is sufficient, saving money while being practical. Always check your vehicle’s manual when choosing fuel—using the wrong grade can damage the engine or increase fuel consumption. As someone who drives often, I’ve noticed a slight edge in acceleration with 98-octane, but the higher price makes it impractical for long-term use. Remember, regular maintenance is far more important—don’t let fuel choice replace basic upkeep.

[VonRicardo]

I've driven quite a few cars, and 98-octane fuel is definitely for those who pursue driving excitement. It reduces that annoying knocking sound at high RPMs and delivers smoother power output, especially noticeable during city traffic jams or highway climbs. Of course, this higher-octane fuel means better compression resistance, but not all cars need it—regular naturally aspirated engines are fine with 95-octane. I'd recommend trying 98-octane if your car is a high-end model or just after maintenance to feel the difference. However, don't expect it to save fuel or clean carbon deposits—it's purely about enjoyment. Check your manual beforehand to avoid wasting money.

[Debra]

98-octane is a higher grade of gasoline, and the octane rating indicates stronger anti-knock performance. For most regular cars, 95-octane is sufficient, and 98-octane is unnecessarily expensive unless specified in the vehicle's manual. I don't drive performance cars in my daily life, so I choose 95-octane to save money, and my car still runs smoothly. The key point is not to blindly believe in higher octane ratings, as they don't directly affect fuel consumption or cleanliness.

[AnastasiaLee]

From a driving experience perspective, 98-octane is a grade of gasoline, where a higher number indicates it is less prone to causing knocking issues in the engine. It is suitable for high-compression engines, such as those in sports cars, and can slightly enhance the driving experience, such as smoother acceleration. For regular family cars, using 92 or 95-octane is perfectly adequate, and upgrading is unnecessary. Always refer to the vehicle's manual for guidance on fuel selection.