Aftermarket fuel additives
NISSAN does not recommend the use of any aftermarket fuel additives (for example, fuel injector cleaner, octane booster, intake valve deposit removers, etc.) which are sold commercially. Many of these additives intended for gum, varnish or deposit removal may contain active solvents or similar ingredients that can be harmful to the fuel system and engine.
See also:
Temperature
High temperatures accelerate the rate of corrosion
to those parts which are not well ventilated. ...
Anti-freeze
In the winter when it is anticipated that the
outside temperature will drop below 328F (08C),
check the anti-freeze to assure proper winter
protection. For additional information, see “Engine ...
Brake and clutch (if so equipped) fluid
For further brake and clutch fluid specification
information, refer to “Capacities and recommended
fuel/lubricants” in the “Technical and
consumer information” section of this manual.
...