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:
Pretensioners
The Fiat Doblò (with passenger's air bag ) is fitted with pretensioners on the
front side seats to improve the protection provided by the seat belts.
These devices “feel”, that a violent ...
If an exterior light burns out
Alterations or repairs to the electric system not carried out correctly and
without taking into account the system specifications may cause failures and the
risk of fire.
See “If a bulb burns ou ...
EOBD system
The EOBD system (European On Board Diagnosis) allows continuos diagnosis of the
components of the vehicle correlated with emissions.
Furthermore, the system warns the driver of deterioration concer ...