See also:

Before starting the engine
- Make sure the area around the vehicle is clear. - Check fluid levels such as engine oil, coolant, brake fluid, and window washer fluid as frequently as possible, or at least whenever you re ...

Temperature
High temperatures accelerate the rate of corrosion to those parts which are not well ventilated. ...

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 ...