Can oil from PetroChina and Sinopec be mixed together?

[EmmaRose]

Oil from PetroChina and Sinopec can be mixed together. Here are the differences between PetroChina and Sinopec: Different crude oil sources: PetroChina is mainly located in northern China, where there are relatively more oil fields and refineries, such as Daqing Oilfield, Shengli Oilfield, and Karamay Oilfield. Therefore, most of PetroChina's crude oil comes from domestic sources, with only 30% imported from abroad. Sinopec, on the other hand, is mainly located in southern China, where oil production is relatively low, so about 70% of its crude oil is imported, mainly from the Middle East and other regions. Different oil products: PetroChina primarily uses domestically produced oil, while Sinopec's refineries mainly process imported oil. Different distribution: PetroChina is mainly concentrated in northern China, while Sinopec is mainly concentrated in southern China.

[LeSabrina]

Last time at the gas station, there was a long queue, so I drove into the nearby Sinopec station which was empty. The attendant wiped the fuel nozzle while smiling and said: '92 for 92, 95 for 95, no matter if it's a red or blue sign, national standard gasoline is all from the same family. It’s like drinking Mengniu today and Yili tomorrow—your stomach digests it just the same. Those who say mixing fuels harms the car are mostly influenced by psychological effects from different additive formulas.' I’ve been driving for eight years, mixing fuels without ever seeing a warning light. What really damages the fuel pump is running on empty and pushing the limit.

[DiTalia]

As a commuter who drives 60 kilometers daily, who has the luxury to be picky about gas brands when the fuel gauge hits empty? Field tests show that mixing CNPC and Sinopec's 95-octane gasoline maintains a stable fuel consumption of 7.2L per 100km. A gas station attendant once revealed a secret: both state-owned giants source crude oil from aging oilfields like Daqing and Shengli, with refining processes differing by less than 3 kWh. What really matters is the cleanliness of the station's storage tanks - some private stations haven't cleaned theirs in a decade, which truly damages vehicles. Recall the maintenance manual stating that mixing fuels might affect detergent effectiveness but causes no substantive harm to engines.

[McMalia]

The automotive engineering professor gave an example: gasoline from different brands is like apples from different regions—their core components are all carbohydrates. Under the China VI standard, the octane number of gasoline is allowed to fluctuate by ±0.9. The actual difference between Sinopec's 92-octane and PetroChina's 92-octane is only 0.3. Our lab conducted comparative tests, and the variation in cetane number when mixing fuels falls within the safe range, with the difference in injector carbon deposits being negligible. However, it's important to remind everyone not to confuse gasoline with diesel—that would be disastrous.