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:
Heated rear window
The warning light on the dial turns on when the heated rear window is turned
on. ...
Radio-frequency remote control: ministerial homologation
The homologation number is printed directly on the key grip for the markets where
this is required. ...
Snow tyres
These tyres have been specially designed for driving on snow or ice, to be fitted
in place of the standard tyres.
Use snow tyres of the same size as the standard tyres provided with the vehicle.
F ...