
The reason why there is a saying that Daqiao Petrochemical's gasoline should not be used is mainly because some car owners have noticed a significant decrease in their vehicle's power after using it. The fuel is also less durable, leading to poor driving performance on highways, and the car might even stall unexpectedly. Whether to use Daqiao Petrochemical's gasoline depends on your needs. In terms of cost-effectiveness, Daqiao Petrochemical is certainly more affordable, but in terms of quality, Sinopec is undoubtedly better. Differences between Daqiao Petrochemical and Sinopec: Different fuel refining processes: Daqiao Petrochemical primarily uses crude oil from domestic local refineries, while Sinopec mostly uses high-quality imported crude oil. During the refining process, Sinopec adds fuel additives with better performance and effects, which results in Sinopec's gasoline being more powerful, durable, and of higher quality compared to Daqiao Petrochemical's. Different fuel prices: To survive in the competitive environment dominated by the 'big three' oil companies, Daqiao Petrochemical lowers its fuel prices through price wars. Therefore, Daqiao Petrochemical's fuel prices are much lower than Sinopec's. Different operational models: As a private enterprise, Daqiao Petrochemical has a smaller operational scope, serving mainly local customers. In contrast, Sinopec has a more comprehensive operational range, covering both local areas and highways, making it more convenient for refueling compared to Daqiao Petrochemical.

Once I filled up my car with fuel from Daqiao Petrochemical, and soon after driving, the engine started running rough and shaking violently. The fuel quality from these small gas stations is often subpar, with excessive impurities that the filters can't fully block, which is particularly damaging to the fuel injectors and catalytic converter. What's even more frustrating is that the octane rating is falsely labeled—advertised as 95 but actually worse than 92, causing the check engine light to come on shortly after refueling. The mechanic who drained my fuel tank found the fuel to be murky, saying the excessive gum content could corrode the fuel system. Now I only dare to refuel at major brands like Sinopec and PetroChina. It's more expensive, but the engine runs much smoother.

If you take a close look at the fuel nozzles at gas stations like Daqiao Petrochemical, you'll hardly see any vapor recovery devices. The olefin and aromatic hydrocarbon content in their fuel definitely exceeds standards, leading to severe carbon buildup over time. I've specifically tested fuel samples from several small gas stations—their octane ratings were 2-3 units lower than standard, with significantly worse anti-knock performance. The key issue is sulfur content often exceeds limits, resulting in foul-smelling exhaust that damages oxygen sensors. When you do the math, this 'cheap' fuel actually costs more. Last year, my colleague tried saving money by using this fuel, but the cost of cleaning his fuel injectors afterward equaled six months' worth of premium fuel.

I tried the gas from Daqiao Petrochemical near my home twice and didn't dare to use it again. The first time after refueling, my car felt sluggish, with the engine roaring without acceleration when stepping on the gas. The second time was even worse – sudden cylinder misfire and shaking on the highway. This kind of fuel likely cuts corners on additives, not only having poor cleaning performance but also prone to sludge formation. Most critically, their tanker truck management is lax. Once at dawn, I saw them unloading oil without sedimentation filtration, pumping impurities and water from the bottom directly into storage tanks. Now when refueling, I always check if the gas station has regular tank cleaning records.


