Differences Between Gasoline Grades 92, 95, and 98

[GenevieveMarie]

98, 95, and 92 gasoline grades differ in the following aspects: 1. Quality varies: 98 gasoline has a higher octane rating; 95 and 92 gasoline have lower octane ratings. Higher octane fuels exhibit superior anti-knock performance, resulting in smoother engine operation. 2. Fuel consumption differs: 98 gasoline has lower fuel consumption; 95 and 92 gasoline have higher fuel consumption. The higher the gasoline grade (i.e., the higher the octane content), the less prone it is to knocking, and the better the engine's anti-knock performance during combustion. Car owners should select gasoline based on their engine's compression ratio. Vehicles with higher compression ratios should use higher-grade gasoline to ensure strong power output and low cost without engine knocking.

[KennedyLee]

As a veteran driver with twenty years of experience, I've found that the key difference between fuel grades like 92, 95, and 98 lies in their anti-knock properties. The higher the octane rating, the greater the resistance to engine knocking during high compression ratios. For my naturally aspirated car, 92 octane works perfectly fine, but turbocharged vehicles require at least 95 octane – otherwise, you'll hear that distinct knocking sound during acceleration. Using the wrong fuel grade can severely damage pistons and connecting rods, with repairs costing thousands. However, don't blindly opt for higher octane fuel – my old Jetta actually lost power and became less responsive with 98 octane, plus it wasted money costing over 30 yuan more per tank.

[MacCole]

I usually check the fuel cap for answers - the octane rating specified by the manufacturer is the most suitable for the vehicle. 92 octane works best for older cars with compression ratios below 9.5, like my Corolla which ran fine on 92 for 150,000 km. 95 octane matches engines with 9.5-10.5 compression ratios, which most modern cars use. 98 octane is designed for performance vehicles - sports cars can have compression ratios up to 12:1. Last time I mistakenly filled my friend's Porsche with 92, the check engine light came on immediately. Avoid mixing fuel grades - while occasional emergency use is acceptable, long-term mixing can cause severe carbon buildup.

[StephenLee]

The main difference between these three types of gasoline lies in their octane ratings. 92 represents 92% isooctane, while 98 represents 98%. The higher the octane rating, the better the anti-knock performance, which is especially important for turbocharged vehicles requiring higher-grade fuel. I've carefully observed the fuel tankers at gas stations—different grades are diverted from the same storage tank, with variations only in the additive formulations. Higher-grade fuels contain more detergents, which help reduce carbon buildup in fuel injectors. As someone who drives long distances monthly, I've noticed that 95-octane fuel lasts significantly longer than 92—the same tank can cover about 50 km more.