All gasoline sold in the United States is required to contain effective detergent additives. Use of additional detergents or other additives is not needed under normal conditions and would result in additional cost. Therefore you should not have to add anything to the fuel.
See also:
13. Power Steering System Warning
This light is used to manage the electrical warning of the EPS (Power Steering
System).
Refer to “Power Steering” in “Starting and Operating” for further information. ...
Safety
The Fiat Doblò is designed and built to achieve the highest levels of safety.
It is the result of the many devices offered (standard or optional according to
market or outfit) starting from ...
Rain sensor
The rain sensor is behind the driving mirror in contact with the windscreen and
has the purpose of automatically adjust, during the intermittent operation, the
frequency of the windscreen wiper ...