- Regular unleaded gasoline is typically clear or yellow in color.
- Premium unleaded gasoline is often dyed a shade of red or blue.
- Diesel fuel is typically a brownish-yellow color.
- E85 fuel, which is a mixture of 85% ethanol and 15% gasoline, is typically dyed yellow or green.
- Biodiesel fuel, which is made from renewable resources such as vegetable oils or animal fats, can be a variety of colors, including yellow, green, or clear.
The specific colors used for different fuels can vary from country to country and may also change over time.
