See also:

Engine oil and oil filter recommendations
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Where to go for service
If maintenance service is required or your vehicle appears to malfunction, have the systems checked and serviced by a NISSAN dealer. NISSAN technicians are well-trained specialists and are kept ...

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 ...