Dalian PetroChina is better than Zhongfu Petroleum. I added Sinochem Oil and Zhongfu Oil, both domestic oils in 200 yuan. Sinochem oil runs about 30 kilometers more than Zhongfu oil. Moreover, there are more Sinochem gas stations there than Zhongfu gas stations, so it is more convenient to refuel. I feel that the oil quality of Sinochem Oil is better than that of Zhongfu Oil. I also gave a small gift when I refueled 100.