See also:

Installing front license plate
To mount the front license plate, attach the license plate bracket 1 to the plastic finisher at the location marks (small dimples) using the two 6 mm screws provided. ...

Engine cooling system
The engine cooling system is filled at the factory with a pre-diluted mixture of 50% Genuine NISSAN Long Life Antifreeze/Coolant (blue) and 50% water to provide year-round anti-freeze and cool ...

Advanced Safety Systems, A Variety of Models and Packages
The 2009 Frontier includes a long list of safety equipment, including Zone Body construction with front and rear crumple zones, Nissan Advanced Air Bag System (which includes dual-stage front supp ...