I have been refueling in this network for several years, gasoline is normal, the quality of service is good, there are several types of coffee to choose from)
I refueled at this gas station, I did not like the quality of gasoline, as I determined by the work of my Chevrolet cobalt car, I began to refuel at another gas station, I will not write at which one, the engine thrust became better, and this indicates that it means that they are messing around