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:
Tailgate
Opening/closing the tailgate
To open the tailgate from the outside, turn the ignition key in lock fig. 118
and pull handle A in the direction of the arrow.
The opening of the boot is made easier b ...
Symbols
Special colored labels have been attached near or actually on some of the components
of your Fiat Doblò. These labels bear symbols that remind you of the precautions
to be taken as regards ...
Engine
...