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:
Glove Box Compartment
The glove box is located on the right side of the instrument panel. Pull outward
on the door latch to open the glove box. Push the glove box door upward to close
it.
Glove Box Compartment ...
Fuel consumption
The fuel consumption figures given in the table below are determined on the basis
of the homologation tests set down by specific European Directives.
The procedures below are followed for measuring ...
“Distance unit” (Dist. Unit)
The display gives information according to the set unit (km or mi). To select
the required distance units, proceed as follows:
...