Today, unleaded fuel is the most common type of gasoline sold in the United States. It is safe for use in vehicles with catalytic converters, which are devices that help to control emissions from vehicles.
Leaded fuel is still available in some countries, but it is much less common than unleaded fuel. It is important to use the correct type of fuel in your vehicle, as using leaded fuel in a vehicle that is not designed for it can damage the catalytic converter.
