What grade of gasoline should the Changan Oushang X7 use?

[DeTaylor]

According to the vehicle manual, the Changan Oushang X7 can use 92-grade gasoline. From a professional perspective, the difference between 95-grade and 92-grade gasoline lies in their octane ratings. The octane rating is a technical term that measures the gasoline's resistance to knocking. First, the gasoline grade represents its anti-knock performance. A higher grade indicates better anti-knock capability, but it has no relation to the quality of the gasoline itself, nor does it mean that higher-grade gasoline contains fewer impurities. Both 92-grade and 95-grade gasoline have the same fuel quality and cleanliness; the main difference is the amount of anti-knock additives. Some people prefer to use higher-grade gasoline for their cars, believing that it offers better cleanliness, burns longer, and produces less carbon deposits. However, this is a misconception! Different engines require different anti-knock values, and different gasoline grades are suitable for engines with varying compression ratios. Therefore, it is sufficient to use the gasoline grade recommended by the manufacturer, and there is no need to pursue higher-grade gasoline, which would only lead to unnecessary expenses.

[VonAugust]

I've been driving the Changan Oshan X7 for over a year now, always using 92-octane gasoline because the user manual clearly recommends this grade. The engine is designed for 92-octane with a relatively low compression ratio, making 92-octane perfectly suitable for daily driving. If I were to use 95-octane, the higher octane rating might lead to incomplete combustion, potentially causing carbon buildup or just wasting money. My typical commute with 92-octane gives me a stable fuel consumption of around 7-8L/100km, and it performs well on highways too. Remember, using the right fuel grade is crucial for engine longevity—don’t switch to other grades just for convenience, as it could damage internal components. If the gas station occasionally runs out of 92-octane, using 95-octane temporarily is fine, but avoid doing it long-term. In short, sticking to the manufacturer’s recommendation is the most hassle-free approach.

[VonBeau]

As a seasoned driver with 20 years of experience, I recommend using 92-octane gasoline for the Changan Oshan X7. The compression ratio of this model is controlled at around 9, making 92-octane the perfect match—95-octane is unnecessarily premium. I've tried 95-octane a few times and noticed no significant power boost, just higher fuel consumption, costing dozens more per tank—a total waste. Using the right fuel protects spark plugs and catalytic converters from premature wear. Using the wrong octane can cause engine knocking, affecting smoothness. I once inspected a friend's X7 and found more carbon buildup after switching to 95-octane. For safety, stick to the manufacturer's recommendation and check the fuel system during regular maintenance.

[SanEloise]

I always pay great attention to environmental protection when driving, and my Changan Oshan X7 only uses 92-octane gasoline. This octane rating offers the best cost-performance ratio and optimal combustion efficiency, reducing unnecessary carbon emissions. The 92-octane fuel perfectly matches the engine design, while 95-octane may be too high and lead to incomplete combustion, increasing pollutants. The manufacturer recommends 92-octane for energy efficiency and environmental friendliness. With one full tank, I can drive about 500 kilometers in the city, which is a reasonable fuel consumption. Using a lower octane rating may cause premature engine aging and higher repair costs. Remember, using the right fuel ensures smooth and efficient vehicle operation.