If you are at the gasoline station, then such dream shows that it is the time for you to stop and renew yourself. Perhaps you are over tired and dont have enough energy to perform completely. The dream is also a reflection of your capability to use any circumstances for your own well-being.
Dream dictionary: Gasoline Station dream meanings
Maybe you found what you wanted in a plot of your life. Some interpretations say that if in the dream someone is serving you gasoline, then it symbolizes the granting of some form of credit.