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:
Checking the levels
1. Engine oil
2. Battery
3. Brake fluid
4. Windscreen washer fluid
5. Engine coolant
6. Power steering fluid.
Do not smoke while working in the engine compartment: the presence of flammable
...
Onboard Diagnostic System – OBD II
Your vehicle is equipped with a sophisticated onboard diagnostic system called
OBD II. This system monitors the performance of the emissions, engine, and automatic
transmission control systems. Wh ...
Passenger’s front air bag (where provided)
It consists of an instant-inflating cushion contained in a special recess in
the dashboard; its volume is bigger than the driver’s one.
The driver’s and passenger’s front Air bags have been desig ...