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 are not needed under normal conditions and would result in additional cost.
Therefore you should not have to add anything to the fuel.
See also:
Materials Added To Engine Oils
Do not add any supplemental materials, other than leak detection dyes, to your
engine oil. Engine oil is an engineered product and its performance may be impaired
by supplemental additives. ...
Engine Oil Selection
For best performance and maximum protection for all engines under all types of
operating conditions, the manufacturer recommends engine oils that are API Certified
and meet the requirements of Chr ...
To Activate
Push the ON/OFF button. The Cruise Indicator Light in the instrument cluster
will illuminate. To turn the system off, push the ON/OFF button a second time. The
Cruise Indicator Light will turn off ...