PetroChina and Sinopec oil which is better to know

First of all, we have to know that although Sinopec's territory is mainly concentrated in the southern region, but because of the relatively small number of oilfields in the south, so most of Sinopec's crude oil is imported (Middle East). As for PetroChina, there are many oil fields in the country, mainly in the northern region, such as Daqing, Liaohe and Keramayi, etc., so PetroChina's crude oil is basically self-sufficient (domestic crude oil).

So, in terms of raw materials alone, imported crude oil uses superior additives, and the oil is definitely better than domestic ones. Secondly, Sinopec uses the world's leading refining technology, so the density of Sinopec gasoline is higher than that of PetroChina. The higher the density of the gasoline, the greater the power of the car, which means that Sinopec's gasoline is more resistant to burning than PetroChina.

Overall, Sinopec's oil is indeed superior to PetroChina's, so it's not true to say that Sinopec has more carbon buildup than PetroChina. Then, the engine carbon problem, probably because before the different brands of gasoline for mixing, to know the different brands of gasoline, processing technology and raw materials are not the same, although at first there will be no obvious impact, but over time certainly on the engine conditions are not friendly (carbon, shaking), so we must not mix.

Secondly, it may also be due to the filling of a lower grade of gasoline, know that different grades of gasoline octane is not the same, the higher the grade of gasoline octane is higher, and the gasoline anti-detonation is also more excellent. However, if you fill up a lower grade of gasoline, then when the car is running, the engine will easily appear the phenomenon of vibration, long-term will certainly lead to an increase in carbon deposits. So before you fill up the gasoline, you must pay attention to the appropriate gasoline standard for your car.