To help ensure smooth, safe and economical driving, NISSAN provides two maintenance schedules that may be used, depending upon the conditions in which you usually drive. These schedules contain both distance and time intervals, up to 120,000 miles (192,000 km)/144 months. For most people, the odometer reading will indicate when service is needed. However, if you drive very little, your vehicle should be serviced at the regular time intervals shown in the schedule.
After 120,000 miles (192,000 km)/144 months, continue maintenance at the same mileage/time intervals.
Additional maintenance items for severe operating conditions
Additional maintenance items for severe operating conditions should be performed on vehicles that are driven under especially demanding conditions. Additional maintenance items should be performed if you primarily operate your vehicle under the following conditions:
NOTE:
For vehicles operated in Canada, both standard and severe maintenance items should be performed at every interval.
Explanation of scheduled maintenance itemsThe following descriptions are provided to give you a better understanding of the scheduled maintenance items that should be regularly checked or replaced. The maintenance schedule indicates at wh ...

The following tables show the standard maintenance schedule. Depending upon weather and atmospheric conditions, varying road surfaces, individual driving habits and vehicle usage, additional or mo ...
Maintenance under severe operating conditions
The maintenance intervals shown on the preceding pages are for normal
operating conditions. If the vehicle is mainly operated under severe driving
conditions as shown below, more frequent maintenance must be performed on the
following items as shown in the table.
Severe driving conditions
...
Ignition coil, spark plug and rocker cover
Exploded View
1. Ignition coil 2. Spark plug 3. Rocker cover
4. Hose cramp 5. PCV hose 6. PCV valve
7. Oring 8. Gasket 9. Oil filler cap
10. Oring 11. Intake camshaft position sensor 12. Exhaust camshaft position
sensor
13. Clip A. To intake manifold
Removal and Installation
REMOVAL
...