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:
Maintenance Procedures
The pages that follow contain the required maintenance services determined by
the engineers who designed your vehicle.
Besides those maintenance items specified in the fixed maintenance schedule,
...
Electronic Speed Control
When engaged, the Electronic Speed Control takes over accelerator operations
at speeds greater than 25 mph (40 km/h).
The Electronic Speed Control buttons are located on the right side of the steer ...
Driving Through Water
Driving through water more than a few inches/ centimeters deep will require extra
caution to ensure safety and prevent damage to your vehicle. ...