When renting a car from Dublin Cars, it is essential to use the appropriate fuel type as specified in the vehicle's manual or on the fuel filler door. Most rental cars typically use either unleaded gasoline or diesel, depending on the make and model of the vehicle. Dublin Cars usually provides information about the required fuel type at the time of rental and may also have this information available in the vehicle itself. It is important to use the correct fuel to avoid any potential issues or damages that could result from using the wrong type. If you are ever uncertain, you may want to check the specific rental agreement or the current webpage for more detailed fuel instructions. This ensures that your experience with the rental car remains smooth and enjoyable.