1999 Mercury Mountaineer engine oil

High beams
Illuminates when the high beam
headlamps are turned on.
Anti-theft system (if equipped)
Refer toSecuriLockypassive
anti-theft systemin theControls
and featureschapter.
Charging system
Illuminates when the ignition is
turned to the ON position and the
engine is off. The light also
illuminates when the battery is not
charging properly, requiring
electrical system service.
Check gage
Illuminates when the engine coolant
temperature is high, the engine oil
pressure is low or the fuel gauge is
at or near empty. The ignition must
be in the ON position for this lamp to illuminate. The lamp will also
illuminate for several seconds after the ignition is turned to the ON
position. Refer toEngine coolant temperature gauge, Engine oil
pressure gaugeorFuel gaugein this chapter for more information.
Four wheel drive low (if equipped)
This light momentarily illuminates
when the ignition is turned to ON.
Illuminates when four-wheel drive
low is engaged. If the light continues
to flash have the system serviced.
THEFT
CHECK
GAGE
4WD
LOW
Instrumentation
9

Battery voltage gauge
This gauge shows the battery
voltage when the ignition is in the
ON position. If the pointer moves
and stays outside the normal
operating range (as indicated), have
the vehicle's electrical system
checked as soon as possible.
Engine oil pressure gauge
This shows the engine oil pressure
in the system. Sufficient pressure
exists as long as the needle remains
in the normal range (the area
between the ªLº and ªHº).
If the gauge indicates low pressure,
stop the vehicle as soon as safely
possible and switch off the engine
immediately. Check the oil level.
Add oil if needed (refer toEngine
oilin theMaintenance and care
chapter). If the oil level is correct, have your vehicle checked at your
dealership or by a qualified technician.
L
H
H
L
Instrumentation
14

Fuel economy
Press to display your vehicle's
average fuel economy in liters/100
km or (miles/gallons).
Reset
Press the reset control to reset the
current feature being displayed.
Warnings, distance driven, average
fuel economy, fuel used and
personalized oil reset percentage are
the only features that respond to
reset.
System check
Press the system check control to
display the status of the following
systems:
²engine oil life left
²engine oil level
²voltage level
²engine coolant temperature
²washer fluid level
²fuel level
ENGLISH/
METRICRANGESTATUS
ECONRESETSYSTEM
CHECKOIL
CHANGE
RESET
FUEL
ENGLISH/
METRICRANGESTATUS
ECONRESETSYSTEM
CHECKOIL
CHANGE
RESET
FUEL
ENGLISH/
METRICRANGESTATUS
ECONRESETSYSTEM
CHECKOIL
CHANGE
RESET
FUEL
Instrumentation
17

The engine oil life left has two phases. The first display will indicate the
oil change status (OK, SOON, REQUIRED). The second display will
indicate the percentage of oil life remaining. The display OIL TEMP
SIGNAL ERROR indicates a problem with the system. Following this
display, contact your dealer or qualified service technician for system
maintenance.
Operating the message center during system check
The message center controls can be operated as follows during the
system check sequence:
1. Press the system check controls to advance to the next display.
2. Press the reset control to immediately conclude the system check.
3. Press the range, fuel status or fuel economy control to conclude the
system check and display the requested feature.
4. Press the metric/English control to conclude the system check and
change the previous display to the new mode.
5. Press the oil change reset control to conclude the system check and
begin the oil change reset procedure.
An oil change is recommended whenever indicated by the message
center. Use only recommended engine oils.
The message center will tell you the percent of oil life left during system
check. This percentage is based on your driving history and the time
since your last oil change. In order to ensure accurate oil life left
indications, you should only perform the following procedure after you
have the oil changed.
Oil change reset
Press the OIL CHANGE RESET
control to reset the oil life feature to
100% (or your personalized oil reset
percentage) (at optimal driving
conditions, 100% oil life is
equivalent to a maximum of 12 000
kilometers [7 500 miles]). After you
have the oil changed, you must
press and hold the OIL CHANGE
RESET control for five seconds. The
message center will count down for
five seconds. After a successful reset, the message center will display
ENGLISH/
METRICRANGESTATUS
ECONRESETSYSTEM
CHECKOIL
CHANGE
RESET
FUEL
Instrumentation
18

2. Go to the front of the vehicle and release the auxiliary latch that is
located in the center between the hood and the grill.
3. Lift the hood until the lift cylinders hold it open.
IDENTIFYING COMPONENTS IN THE ENGINE COMPARTMENT
4.0L SOHC V6 engine
1. Windshield washer fluid reservoir
2. Automatic transmission fluid dipstick
3. Engine oil filler cap
4. Engine oil dipstick
5. Brake fluid reservoir
6. Battery
7. Power steering fluid reservoir
8. Air filter assembly
9. Engine coolant reservoir
9
13425
867
Maintenance and care
193

5.0L V8 engine
1. Engine coolant reservoir
2. Windshield washer fluid reservoir
3. Engine oil filler cap
4. Automatic transmission fluid dipstick
5. Brake fluid reservoir
6. Battery
7. Power steering fluid reservoir
8. Engine oil dipstick
9. Air filter assembly
ENGINE OIL
Checking the engine oil
Refer to the Scheduled Maintenance Guide 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 a few minutes for the oil to drain into the
oil pan.
3. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
1
23
6
54
879
Maintenance and care
194

4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the engine oil level indicator (dipstick).
²4.0L V6 engine
²5.0L V8 engine
6. Wipe the indicator clean. Insert the indicator fully, then remove it
again.
²If the oil level isbetween the ADD and FULL marks (4.0L
engine)orbetween the MIN and MAX marks (5.0L engine),the
oil level is acceptable.DO NOT ADD OIL.
ADD 1 QTFULL
MAX MIN
Maintenance and care
195

²If the oil level is below the ADD
mark (4.0L engine) or MIN mark
(5.0L engine), add enough oil to
raise the level within the
ADD-FULL range (4.0L engine)
or MIN-MAX range (5.0L engine).
²Oil levels above the letter F in FULL (4.0L engine) or the MAX mark
(5.0L engine) may cause engine damage. Some oil must be removed
from the engine by a service technician.
7. Put the indicator back in and ensure it is fully seated.
Adding engine oil
1. Check the engine oil. For instructions, refer toChecking the engine
oilin this chapter.
2. If the engine oil level is not within the normal range, add only certified
engine oil of the recommended viscosity. Remove the engine oil filler cap
and use a funnel to pour the engine oil into the opening.
3. Recheck the engine oil level. Make sure the oil level is not above the
MAX mark or the letter F in FULL on the dipstick.
Engine oil and filter recommendations
Look for this certification mark.
Ford oil specification is WSS-M2C153-G.
Use SAE 5W-30 motor oil certified for gasoline engines by the American
Petroleum Institute.
Maintenance and care
196