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:
Buzzer volume (Buzzer Vol)
The volume of the buzzer accompanying any failure/warning indication can be adjusted
according to 8 levels. The buzzer can be adjusted and, in certain cases, it cannot
be excluded. To adjust the v ...
Recommended Shift Speeds
To use your manual transmission for optimal fuel economy, it should be upshifted
as listed in the following table
...
Failure warnings
In the event of failure, the ESP system is automatically disconnected and the
instrument panel warning light á will come on with fixed light together with the
message on the reconfigurable ...