Does refueling at small gas stations affect the car?

[VanAna]

If you choose a legitimate small gas station, meaning one with all the proper documentation as mentioned above, even if it's not a Sinopec or PetroChina station, the fuel quality is generally acceptable. However, opting for an unregulated small gas station may result in poorer fuel quality that could negatively impact your vehicle. Below are some relevant details: 1. Classification: Based on the scale of petroleum refining enterprises, they can be categorized into "national refineries" and "local refineries." "Local refineries" refer to small regional oil refineries, typically focused on producing low-end industrial fuels. They may also supply fuel products within their regions, but the quality of their fuel is questionable. In contrast, the "three state-owned oil giants" (Sinopec, PetroChina, and CNOOC) have mature refining processes and comprehensive quality standards. The best fuel quality in China is usually found at directly operated stations of these "three state-owned oil giants." 2. Precautions: When refueling, avoid the temptation of cheaper prices at unregulated gas stations to prevent potential engine damage from substandard gasoline.