Materials Added To Fuel
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 they would result in additional cost.
Therefore, you should not have to add anything to the fuel.
See also:
State-of-the-art Connectivity with Segment's Largest Touchscreen
Infotainment Center
The all-new 2011 Chrysler 300 sedan's Uconnect® Touch integrates world-class
infotainment and convenience technologies to keep passengers connected,
comfortable and secure.
From touchscreen nav ...
Synthetic Engine Oils
You may use synthetic engine oils provided the recommended
oil quality requirements are met, and the recommended
maintenance intervals for oil and filter changes
are followed. ...
Engine
...