See also:

Oil additives
NISSAN does not recommend the use of oil additives. The use of an oil additive is not necessary when the proper oil type is used and maintenance intervals are followed. Oil which may contain fo ...

Light reminder chime
With the ignition switch placed in the OFF position, a chime sounds when the driver’s door is opened if the headlights or parking lights are on. Turn the headlight control switch off before leavi ...

NISSAN dealer.
However, now and then you may notice light spark knock for a short time while accelerating or driving up hills. This is not a cause for concern, because you get the greatest fuel benefit when ther ...