2008 FORD SUPER DUTY air filter

Once the “Drive to Clean Exhaust Filter”
message is displayed, operator attention
is required. Conditions such as idling
can be tolerated for up to four hours,
once this message is displayed. If this
message is ignored, your vehicle is being
operated in a manner that will continue
to fill the DPF. As a result, the DPF may
become full of particles. If this occurs,
the “Reduced Engine Power” light
will illuminate and engine power
will be limited. Your message center
will also display “Reduced Engine
Power”. The engine control module will
continue to attempt to clean the filter.
If the filter cannot be cleaned, the
“Service Engine Soon” light will
be illuminated and engine power will be
further limited. Dealer service will then
be required to restore your vehicle to
full power operation. If the DPF needs to be serviced or
replaced, the “Service Engine Soon”
light and/or “Reduced Engine
Power” light will illuminate in the
instrument cluster. Take your vehicle to
your authorized Ford dealer for service.
If the vehicle is brought to an idle during
the regeneration process, the operator
may notice an increase in engine idle
speed and engine tone. This is normal
and due to the DPF being cleaned.
After about five minutes of continuous
idle, the regeneration process will
be discontinued and there may be a
noticeable change in engine sound.
messages displayed with extended idle operation
DRIVE TO CLEAN EXHAUST FILTER
•
Directs the vehicle operator to drive the vehicle above
30 mph (48 km/h) for at least 20 minutes continuously
• Message will continue to be displayed until adequate drive
cycle is completed
• This is a NORMAL message
CLEANING EXHAUST
FILTER
• Informs the vehicle operator that he or she has entered
the cleaning mode through appropriate driving conditions
• This is a NORMAL message
EXHAUST FILTER DRIVE COMPLETE
• Informs the vehicle operator that he or she has completed
an adequate drive cycle in order to clean the DPF
• Will be a short four (4) second display in the Message Center
• This is a NORMAL message
The diesel particulate filter (DPF), an
inline filter in the exhaust system, reduces
carbon emissions by trapping exhaust
particles before they reach the tailpipe.
The DPF looks similar to a traditional
exhaust catalyst, except larger, and is part
of the exhaust system under the vehicle.
Once the DPF is full of these particles, the
engine control module will command the
exhaust system to clean the DPF through
a process called regeneration.
Regeneration requires the engine computer
to raise the exhaust temperature to
eliminate the particles. During cleaning, the
particles are converted to harmless gasses,
and the DPF will then be clean and ready
to continue trapping exhaust particles.
The regeneration process operates more
efficiently when the vehicle is safely
operated at least 30 mph (48 km/h)
with a steady pedal for approximately
20 minutes to complete the process. The frequency and duration of regeneration
will fluctuate as both are determined by
how you drive your vehicle, outside air
temperature, and altitude. For most driving,
regeneration frequency will vary from
100 - 668 miles (161 - 1075 km) between
occurrences and each occurrence will
last from 10 - 40 minutes. The duration
of regeneration is usually reduced if a
constant speed above 30 mph (48 km/h)
is maintained.
When the engine control module detects
that the DPF is nearly full of particulates
and that the vehicle is not being operated
in a manner to allow effective automatic
cleaning, the Message Center (located in
the instrument cluster) will display several
messages guiding the vehicle operator
to drive to clean the DPF. If the vehicle is
operated in a manner to allow effective
automatic cleaning, the Message Center
will display “Cleaning Exhaust Filter”, which
is the normal regeneration process.

DRIVE SENSIbLy
Aggressive driving (speeding, rapid
acceleration, and braking) wastes
fuel. It can lower your fuel mileage
by 33 percent at highway speeds
and by 5 percent around town.
When accelerating, limit boost to
10 psi and try to stay below 2000
rpm for maximum fuel economy.
Fuel Economy Benefit: 5-33%
KEEP TIRES PROPERL y INFLATED
You can improve your fuel mileage by
around 3.3 percent by keeping your
tires inflated to the proper pressure.
Under-inflated tires can lower fuel
mileage by 0.4 percent for every 1
psi drop in pressure of all four tires.
Properly inflated tires are safer and
last longer. Fuel Economy Benefit:
Up to 3%
USE CRUISE C ONTROL
ON THE HIGHw Ay
Using cruise control on the highway
helps you maintain a constant speed
and, in most cases, will save fuel. DON’T CARR
y MORE
THAN yOU NEED
Avoid keeping unnecessary items in
your vehicle, especially heavy ones.
An extra 100 pounds (45 kg) in your
vehicle could reduce your mpg by up
to 1 percent. Fuel Economy Benefit:
Up to 1% per 100 lbs (45 kg)
ObSERVE THE SPEED LIMIT
Fuel mileage usually decreases
rapidly at speeds above 60 mph (96
km/h). In highway driving, more than
50 percent of the energy required to
move your vehicle down the road
goes to overcoming aerodynamic
drag (pushing air out of the way).
Fuel Economy Benefit: 7-23%
A VOID EXCESSIVE IDLING
(LONGER THAN 3 TO 5 MINUTES)
Idling gets 0 miles per gallon. Every
hour of idling consumes as much fuel
as 30-50 miles (48 - 80 km) of driving. MAKE SURE yOUR VEHICLE IS
PROPERL y MAINTAINED
Fixing a vehicle that is noticeably out of
tune or has failed an emissions test can
improve its fuel mileage by an average of
4 percent. Fixing a serious maintenance
problem, such as a faulty oxygen sensor,
can improve your mileage by as much as
40 percent. Fuel Economy Benefit: 4%
C HECK AND REPLACE
AIR FILTER REGULARL y
Replacing a clogged air filter can
improve your truck’s fuel mileage by
as much as 10 percent. Not only will
replacing a dirty air filter save fuel, it
will protect your engine. Fuel Economy
Benefit: Up to 10%
USE RECOMMENDED
GRADE OF MOTOR OIL
You can improve your fuel mileage by
1-2 percent by using the manufacturer’s
recommended grade of motor oil. For
example, using 10W-30 motor oil in
an engine designed to use 5W-30 can
lower your fuel mileage by 1-2 percent.
Using 5W-30 in an engine designed for 5W-20 can lower your fuel mileage by
1-1.5 percent. Also, look for motor oil
that says “Energy Conserving” on the
API performance symbol to be sure it
contains friction-reducing additives.
Fuel Economy Benefit: 1-2%
KEEP T
AILGATE IN UP POSITION
Keeping the tailgate in the up position
greatly reduces the aerodynamic drag
and thus reduces the amount of energy
required to move your truck down
the road.
ADD T ONNEAU C OVER
Adding a tonneau cover further improves
the truck’s aerodynamic shape and also
reduces the amount of energy required
to move the vehicle down the road.