Can Sinopec and PetroChina 92 gasoline be mixed?

[SamuelLee]

Sinopec and PetroChina 92 gasoline can be mixed. As long as the gasoline octane rating is the same, they can be mixed. It is best to use the same brand of gasoline, as different gas stations may have different gasoline processing methods and additive usage. More relevant information is as follows: 1. Differences between petroleum companies: Because the crude oil refined by Sinopec and PetroChina is different, 90% of Sinopec's oil is imported, while PetroChina's oil is domestically produced. If you want to mix them, make sure to wait until the fuel is almost used up before refueling. Gasoline with different octane ratings has different octane values, and higher-octane gasoline has higher octane values. Gasoline with higher octane values also has better anti-knock properties. 2. Gasoline selection criteria: The primary criterion for selecting gasoline octane rating is the engine's compression ratio, which is also a core energy-saving indicator of modern cars. Engine operation consists of a cyclical process of 'intake-compression-combustion-exhaust-intake' in the cylinder. The compression ratio is the ratio of the cylinder volume when the piston is at the farthest and nearest points in its stroke.

[DelBeckett]

I've been driving for about seven or eight years and don't stick to any particular fuel brand. I frequently use both PetroChina and Sinopec's 92-octane gasoline, sometimes even mixing half a tank of each with no issues. My car is an ordinary Volkswagen Lavida with over 100,000 kilometers on it, and it's been running perfectly fine. I believe these two types of 92-octane gasoline are essentially the same—both meet the national standard for 92-octane fuel with identical octane ratings, ensuring proper engine combustion. There might be minor differences in additives, such as varying cleaning components, but these don't affect daily driving. Occasionally mixing fuels, like when you can't find the same gas station during a trip, is completely fine. However, prolonged mixing might have a slight impact on carbon buildup in older cars. My experience is that getting the fuel injectors cleaned every 20,000 kilometers keeps things running smoothly. Overall, don't worry too much about mixing fuels—just go with whatever is convenient for refueling.

[IsabelleLee]

From a maintenance perspective, I've seen many cars using a mix of PetroChina and Sinopec 92-octane gasoline without major issues. Since 92-octane fuel has consistent octane ratings and is designed to accommodate different suppliers, mixing is generally safe. However, honestly speaking, additive formulations differ, and frequent mixing may lead to uneven fuel system cleaning—such as increased intake valve carbon deposits. I once handled a case where a car owner habitually mixed fuels, resulting in slightly clogged fuel injectors, but normal operation resumed after cleaning. If you do mix fuels, I recommend monitoring fuel consumption or engine sound changes. For optimal results, developing a habit of consistently using the same fuel type is more reliable. This approach minimizes potential minor malfunctions, saving both money and hassle.

[SanLaura]

In terms of fuel essence, both petroleum and petrochemical 92 are 92-octane gasoline, complying with the national GB standard, with stable and reliable octane ratings. Mixing them won't cause immediate harm due to their similar combustion characteristics. The content of additives like detergents may vary, but occasional mixing won't significantly affect performance. If your car is a regular household model, mixing once or twice won't disrupt the engine's smooth operation. Don't stress over it—just choose the most convenient gas station when refueling. If any abnormalities occur, check the filter or spark plugs and maintain regular upkeep.

[DiKira]

I prioritize practicality and saving money, so I've been mixing PetroChina and Sinopec 92-octane gas without hesitation. Since both are 92-octane and often discounted, I simply choose the cheaper option. After mixing, I've noticed no significant changes in acceleration or fuel consumption. There's no need to deliberately distinguish between brands—that just wastes time and money. For instance, when urgently needing gas on highways, any station will do. Long-term mixing might slightly reduce cleaning effectiveness, but it's negligible for economy cars. I recommend occasional mixing rather than frequent switching; the savings could even cover an extra maintenance session!