See also:

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 ...

Exceptions
There are several exceptions to the Normal Schedule. They are listed below: Normal vehicle axle maintenance: Rear axles and power take-off (PTO) units with synthetic fluid and light-duty trucks e ...

Checking automatic transmission fluid at cool temperature (59°F-77°F [15°C-25°C])
If a fluid check is necessary at a low fluid temperature (59°F-77°F [15°C-25°C]), perform the check using the cold range on the dipstick. However, the fluid must be re-checked at the proper ...