See also:

Troubleshooting guide
Verify the location of all Intelligent Keys that are programmed for the vehicle. If another Intelligent Key is in range or inside the vehicle, the vehicle system may respond differently than expect ...

Oil viscosity
The engine oil viscosity or thickness changes with temperature. Because of this, it is important to select the engine oil viscosity based on the temperatures at which the vehicle will be operate ...

SE-R and SE-R Spec V
The Sentra SE-R and SE-R Spec V are sporty variants with a 2.5-liter four-cylinder. The SE-R is built for mainstream consumers who want a sportier feel; the Spec V is geared toward the enthusiast ...