Octane recommendations
3.7L V6 engine
“Regular” unleaded gasoline with a pump (R+M)/2 octane rating of 87 is recommended. Some stations offer fuels posted as “Regular” with an octane rating below 87, particularly in high altitude areas. Fuels with octane levels below 87 are not recommended.
3.5L V6 EcoBoost™ engine
“Regular” unleaded gasoline with a pump (R+M)/2 octane rating of 87 is recommended. Some stations offer fuels posted as “Regular” with an octane rating below 87, particularly in high altitude areas. Fuels with octane levels below 87 are not recommended. Premium fuel will provide improved performance and is recommended for severe duty usage such as trailer tow.
Do not be concerned if your engine sometimes knocks lightly. However, if it knocks heavily while you are using fuel with the recommended octane rating, see your authorized dealer to prevent any engine damage.
See also:
Checking the engine oil
Refer to the scheduled maintenance information for the appropriate
intervals for checking the engine oil.
1. Make sure the vehicle is on level ground.
2. Turn the engine off and wait 15 minutes ...
Rearview camera system (if equipped)
The rearview camera system,
located on the trunk, provides a
video image which appears on the
navigation screen of the area behind
the vehicle. It adds assistance to the
driver while rever ...
First generation (1998–2002)
The 1998 Navigator introduced the concept of the American luxury SUV,
competing at first with only the Land Rover Range Rover. It was trimmed with
leather, wood, and fine carpeting, but its humble ...