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Diesel Engine Cooling System
Diesel Engine Emissions
Diesel Engine Maintenance
PERFORMANCE/HANDLING
This page is about:
2008 F-250/F-350/F-450
Super Duty
®
Pickups
Performance/Handling
July 2007
F-250/F-350/F-450
SD Pickups
The new 6.4L Power Stroke
®
V-8 turbo diesel incorporates
engine and emissions-control technologies that help reduce
particulate emissions to a level equivalent with gasoline
engines. A combination of elements work together to allow
Super Duty
®
to achieve new government-mandated diesel
engine emissions requirements.
Diesel Particulate Filter (DPF)
• Located after the diesel oxidation catalyst (DOC)
• Similar to a small incinerator that burns off particulates in
the exhaust gas after they have left the combustion chamber
• “Scrubs” the black smoke in the exhaust gases
• Periodically cleans itself through a process known as
regeneration or “burnoff”
– Passive regeneration burns off soot naturally when exhaust
temperatures are high enough
– Active regeneration (forced burnoff)
occurs as needed, dependent on
operational use
• Exhaust temperature at the
tailpipe is the same as
current diesels
Diesel Engine Emissions
Diesel Engine Maintenance
Be sure your customers are aware of the new maintenance
requirements and service intervals of the new 6.4L Power
Stroke V-8 turbo diesel.
Maintenance
• Ultra Low Sulfur Diesel (ULSD) fuel must be used in the 6.4L
to allow the emissions control system, including the Diesel
Particulate Filter (DPF) to operate properly
• CJ-4 service standard oil must be used when the engine oil
is serviced
• Fuel-water separator should be drained monthly to avoid
possible water in the fuel injectors
• Engine block heater should be used at temperatures below
–10 degrees F (–23 degrees C) to ensure proper engine
lubrication on start-up
• Recommend using biodiesel that is no higher than 5 percent
(B5) to ensure optimum fuel economy. Follow the special
operating conditions maintenance schedule if using biodiesel
• Refer customers to the Diesel Engine Maintenance DVD in
the Owner’s Guide package
• For the California Heavy-duty Diesel Engine Idle
Requirement, guidance from California and compliance
with this requirement is still being finalized. Dealers will
be informed of the updates to this requirement once it has
been completed
Service Intervals
• 10,000-mile normal and 5000-mile special operating
conditions oil-change intervals — new oil specification CJ-4
required for 6.4L to operate properly
• 20,000-mile normal and 10,000-mile special operating
conditions fuel-filter change intervals — both fuel filters must
be replaced according to maintenance intervals
Radiator
• Diesel radiator is significantly larger (19 percent more frontal area)
• Larger water pump nearly doubles flow rate from 75 to 125 gallons per hour
• Allows Super Duty
®
engine to endure extremes of hard use
Diesel Engine Cooling System
Ultra Low Sulfur Diesel (ULSD) Fuel
• ULSD fuel MUST be used in 6.4L to allow the emissions control
system, including the DPF to operate properly
• ULSD fuel may be used in pre-2007 diesel engines
• Sulfur level reduced by 97 percent compared to conventional
diesel (from maximum of 500 parts per million [ppm] to 15 ppm)
Oil Requirement
• Oil that meets the new American Petroleum Institute (API)
service category CJ-4 is required for the 6.4L diesel engine to
operate properly
• CJ-4 service standard oil must be used to keep the engine
warranty in effect
• CJ-4 oil may be used in pre-2007 engines
Exhaust Gas Recirculation (EGR)
• Dual 440mm EGR coolers have an air oxidation catalyst that
scrubs exhaust gases from the air
• The catalyst protects the coolers from fouling and the EGR
valve from deposits
• EGR valve is self-cleaning
• Engine control module monitors the EGR valve, checking for
buildup that can prevent the valve from seating properly
• If buildup is detected, the ECM takes steps to clean the valve seat
DOC
DPF
08 F250-450Pickups_3.indd 1808 F250-450Pickups_3.indd 18 8/30/07 1:01:28 PM8/30/07 1:01:28 PM