See also:

Before starting the engine
● Make sure the area around the vehicle is clear. ● Check fluid levels such as engine oil, coolant, brake and clutch fluid (if so equipped), and windshield-washer fluid as frequentl ...

Battery
● Keep the battery surface clean and dry. Clean the battery with a solution of baking soda and water. ● Make certain the terminal connections are clean and securely tightened. χ ...

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 ...