What is the difference between No. 0 gasoline and No. 92 gasoline?

[DelJessica]

No. 0 is diesel, not gasoline. Gasoline has a higher octane rating and is classified into No. 89, No. 92, and No. 95 based on the octane level. There is no No. 0 gasoline. Diesel is a light petroleum product and a complex hydrocarbon mixture, serving as fuel for diesel engines. It is mainly composed of diesel fractions produced through processes such as crude oil distillation, catalytic cracking, thermal cracking, hydrocracking, and petroleum coking. Below are the characteristics of diesel: 1. Diesel has a higher carbon content compared to gasoline: It also has a higher density, which means that the same mass of diesel will burn longer, in other words, diesel is more "fuel-efficient" than gasoline; 2. Diesel has a lower auto-ignition point: Therefore, diesel engines use compression ignition, eliminating the need for spark plugs to ignite. By compressing air to raise the temperature to the diesel's ignition point and then injecting diesel, it can combust on its own; 3. Diesel is less volatile: It offers greater power and excellent fuel economy performance.

[VonDavid]

I've been driving for ten years, and the main difference between 0-grade and 92-grade gasoline lies in their anti-knock properties. 92-grade has a higher octane rating, making the engine less prone to knocking during ignition, resulting in smoother and more stable driving, which is suitable for most family cars. 0-grade has a lower octane rating, possibly around 87, and while it's cheaper for older cars, it can cause engine knocking, especially during acceleration or on hot days. I once experienced minor engine overheating issues after using 0-grade, so now I stick to 92-grade to protect the engine's lifespan and save on repair costs. Gasoline choice also depends on the car model—turbocharged engines must use 92-grade or higher. For regular cars, if the manual doesn’t specify, using 0-grade occasionally isn’t a big issue, but it’s best to develop the habit of using higher-grade fuel. When refueling, pay attention to the gas station labels to avoid confusion.

[OAbel]

As someone who maintains their own car regularly, I see the difference in gasoline grades in terms of practicality and maintenance costs. 92-octane gasoline has an octane rating of 92, good anti-knock properties, and reduces carbon buildup, protecting engine components from rust over long-term use. Lower-grade 0-octane fuel not only easily causes knocking but also tends to leave residues on fuel injectors, requiring frequent cleaning. I recommend checking the vehicle manual first—some older, economy cars can use 0-octane to save money, but if the compression ratio is high, 92-octane should be chosen to avoid oil burning issues. In terms of maintenance, 92-octane burns cleaner, is more environmentally friendly, and can improve fuel efficiency by about 5%. Although the overall cost is slightly higher, it's worth it.

[SanJade]

From a cost-saving perspective, 0# gasoline is usually 0.1-0.2 yuan cheaper per liter, which can slightly reduce monthly expenses when used sparingly. 92# is more expensive but offers more stable performance, especially on highways or slopes where the engine is less prone to shaking. Personally, I believe 92# is more reliable for city commuting to avoid breakdown risks, while 0# is suitable for older vehicles with lower compression ratios, provided the manual allows it. Overall, the price difference between the two has minimal impact on daily use, and the key is to match the vehicle's requirements for a wise choice.

[Alessandra]

Octane rating is the core difference: No. 92 has an anti-knock index of 92, ensuring smooth engine ignition; while No. 0 may be below 90, prone to knocking and engine damage. I often remind friends that knocking is like uncoordinated internal ignition, causing noise and overheating, which can damage components over time. Using No. 92 allows for more complete combustion, boosting horsepower and reducing emissions. Many modern cars are designed for higher-octane gasoline, so skipping No. 0 and opting directly for No. 92 is a sensible choice for safer and more reliable driving.