
Only use oils certified for gasoline enginesby the American Petroleum Institute (API).An oil with this trademark symbolconforms to the current engine andemission system protection standards andfuel economy requirements of theInternational Lubricants SpecificationAdvisory Committee (ILSAC).
To top up the engine oil level do thefollowing:
1.Clean the area surrounding the engineoil filler cap before you remove it.
2.Remove the engine oil filler cap. SeeUnder Hood Overview (page 93).Turn it counterclockwise and removeit.
3.Add engine oil that meets ourspecifications. See Capacities andSpecifications (page 138). You mayhave to use a funnel to pour the engineoil into the opening.
4.Recheck the oil level.
5.If the oil level is correct, replace thedipstick and make sure it is fully seated.
6.Replace the engine oil filler cap. Turnit clockwise until you feel a strongresistance.
Note: Do not add oil further than themaximum mark. Oil levels above themaximum mark may cause engine damage.
Note:Make sure you install the oil filler capcorrectly.
Note:Soak up any spillage with anabsorbent cloth immediately.
OIL CHANGE INDICATOR
RESET
Resetting the Oil Life MonitoringSystem
Only reset the oil life monitoring systemafter changing the engine oil and oil filter.
To reset the oil life monitoring system dothe following:
1.Switch the ignition on. Do not start theengine.
2.Fully press the accelerator and brakepedals at the same time.
3.Keep the accelerator and brake pedalsfully pressed.
4.After three seconds, a messagedisplays confirming the reset procedureis in progress.
5.After 25 seconds, a message displaysconfirming the reset procedure iscomplete.
6.Release the accelerator and brakepedals.
7.Switch the ignition off.
ENGINE COOLANT CHECK
WARNING: Do not remove thecoolant reservoir cap when the engine ison or the cooling system is hot. Wait 10minutes for the cooling system to cooldown. Cover the coolant reservoir capwith a thick cloth to prevent thepossibility of scalding and slowly removethe cap. Failure to follow this instructioncould result in personal injury.
WARNING: Do not put coolant inthe windshield washer reservoir. Ifsprayed on the windshield, coolant couldmake it difficult to see through thewindshield.
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Note:Holding the pressure washer nozzleat an angle to the vehicle's surface maydamage graphics and cause the edges topeel away from the vehicle's surface.
Underbody
Regularly clean the underside of yourvehicle using water. Keep body and doordrain holes free of debris or foreignmaterial.
Under Hood
For removing black rubber marks fromunder the hood we recommend MotorcraftWheel and Tire Cleaner or Motorcraft Bugand Tar Remover.
CLEANING THE ENGINE
Engines are more efficient when they areclean because grease and dirt buildup keepthe engine warmer than normal.
When washing:
•Take care when using a power washerto clean the engine. The high-pressurefluid could penetrate the sealed partsand cause damage.
•Do not spray a hot engine with coldwater to avoid cracking the engineblock or other engine components.
•Spray Motorcraft Engine Shampoo andDegreaser on all parts that requirecleaning and pressure rinse clean. InCanada, use Motorcraft EngineShampoo.
Note:If your vehicle has an engine coverremove the cover before application ofMotorcraft Engine Shampoo and Degreaser.Immediately rinse away any over spray.
•Never wash or rinse the engine while itis hot or running; water in the runningengine may cause internal damage.
•Never wash or rinse any ignition coil,spark plug wire or spark plug well, orthe area in and around these locations.
•Cover the battery, power distributionbox, and air filter assembly to preventwater damage when cleaning theengine.
CLEANING THE WHEELS (IF
EQUIPPED)
1.Regularly clean them with a wheelcleaner. We recommend that you useFord approved wheel cleaner ifavailable.
2.Remove dirt and brake dust with asponge.
3.Remove tar and grease with a bug andtar remover. We recommend that youuse Ford approved bug and tar removerif available.
4.Thoroughly rinse the wheels with waterafter cleaning.
If you intend on parking your vehicle for anextended period after cleaning the wheelswith a wheel cleaner, drive your vehicle fora few minutes before doing so. Thisreduces the risk of corrosion of the brakediscs, brake pads and linings.
Do not clean the wheels when they are hot.
Note: Some car washes could damagewheel rims and covers.
Note: Using non-recommended cleaners,harsh cleaning products, chrome wheelcleaners or abrasive materials coulddamage wheel rims and covers.
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VEHICLE STORAGE
If you plan on storing your vehicle for 30days or more, read the followingmaintenance recommendations to makesure your vehicle stays in good operatingcondition.
We engineer and test all motor vehiclesand their components for reliable, regulardriving. Under various conditions,long-term storage may lead to degradedengine performance or failure unless youuse specific precautions to preserve enginecomponents.
General
•Store all vehicles in a dry, ventilatedplace.
•Protect from sunlight, if possible.
•If vehicles are stored outside, theyrequire regular maintenance to protectagainst rust and damage.
Body
•Wash your vehicle thoroughly toremove dirt, grease, oil, tar or mud fromexterior surfaces, rear-wheel housingand the underside of front fenders.
•Periodically wash your vehicle if it isstored in exposed locations.
•Touch-up exposed or primed metal toprevent rust.
•Cover chrome and stainless steel partswith a thick coat of auto wax to preventdiscoloration. Re-wax as necessarywhen you wash your vehicle.
•Lubricate all hood, door and luggagecompartment hinges and latches witha light grade oil.
•Cover interior trim to prevent fading.
•Keep all rubber parts free from oil andsolvents.
Engine
•Change the engine oil and filter prior tostorage because used engine oilcontains contaminates which maycause engine damage.
•Start the engine every 15 days for aminimum of 15 minutes. Run at fastidle with the climate controls set todefrost until the engine reaches normaloperating temperature.
•With your foot on the brake, shiftthrough all the gears while the engineis running.
•We recommend that you change theengine oil before you use your vehicleagain.
Fuel system
•Fill the fuel tank with high-quality fueluntil the first automatic shutoff of thefuel pump nozzle.
Cooling system
•Protect against freezing temperatures.
•When removing your vehicle fromstorage, check coolant fluid level.Confirm that there are no coolingsystem leaks and that fluid is at therecommended level.
Disconnecting Your 12 Volt Battery
•Check and recharge as necessary. Keepconnections clean.
•If storing your vehicle for more than 30days without recharging the battery,we recommend that you disconnectthe battery cables to maintain batterycharge for quick starting.
Note:It is necessary to reset memoryfeatures if you disconnect the batterycables.
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ENGINE SPECIFICATIONS
6.8L EngineEngine
415 in³ (6,800 cm³)Displacement
1-6-5-10-2-7-3-8-4-9Firing order
Coil on plugIgnition system
0.039 in (1 mm) - 0.043 in (1.1 mm)Spark plug gap
9.2:1Compression ratio
Drivebelt Routing
Engines with Air Conditioning
Engines without Air Conditioning
MOTORCRAFT PARTS
Motorcraft Part numberComponent
FA-1782Air filter element
BH-31-XTBattery (F-53 stripped chassis and F-59step van ramp prep package)
BH-31-XTBattery (F-59 step van)
FL-820-SOil filter
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Motorcraft Part numberComponent
SP-509Spark plugs
FT-187Transmission fluid filter
We recommend Motorcraft replacement parts available at your Ford dealer or atfordparts.com for scheduled maintenance. These parts meet or exceed Ford MotorCompany’s specifications and are engineered for your vehicle. Use of other parts mayimpact vehicle performance, emissions and durability. Your warranty may be void for anydamage related to use of other parts.
If a Motorcraft oil filter is not available, use an oil filter that meets industry performancespecification SAE/USCAR-36.
For spark plug replacement, contact an authorized dealer. Replace spark plugs at theappropriate intervals. See Scheduled Maintenance (page 145).
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CAPACITIES AND SPECIFICATIONS
Capacities
WARNING: The air conditioning refrigerant system contains refrigerant underhigh pressure. Only qualified personnel should service the air conditioning refrigerantsystem. Opening the air conditioning refrigerant system can cause personal injury.
CapacityItem
7.0 qt (6.6 L)Engine oil (with oil filter)
30.6 qt (29 L)Engine coolant
Between MIN/MAX on brake fluid reservoirBrake fluid
4.1 qt (3.9 L)Rear axle lubricant(Dana M80 axle)
8.0 qt (7.6 L)Rear axle lubricant(Dana S110 axle)
7.0 qt (6.6 L)Rear axle lubricant(Dana S130 axle)
16.0 qt (15.1 L)Rear axle lubricant(Dana Spicer 107060S axle)
17.2 qt (16.3 L)1Automatic transmission fluid
Keep in FULL range on dipstickPower steering fluid
Fill as requiredWindshield washer fluid
80 gal (303 L)Fuel tank (Motorhome)
40 gal (151 L)Fuel tank (Commercial chassis)
44 oz (1.25 kg)A/C refrigerant
8.8 fl oz (260.2 ml)A/C refrigerant compressor oil
1 Approximate dry fill capacity. Actual amount may vary during fluid changes.
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Specifications
Materials
SpecificationName
WSS-M2C945-B1Motor oil (U.S.):Motorcraft® SAE 5W-20 Premium Synthetic Blend MotorOilXO-5W20-QSP
WSS-M2C945-B1Motor oil (Canada):Motorcraft® SAE 5W-20 Super Premium Motor OilCXO-5W20-LSP12
WSS-M2C946-B1Optional Motor oil (U.S.):Motorcraft® SAE 5W-30 Premium Synthetic Blend MotorOilXO-5W30-QSP
WSS-M2C946-B1Optional Motor oil (Canada):Motorcraft® SAE 5W-30 Super Premium Motor OilCXO-5W30-LSP12
WSS-M97B44-D2Engine coolant (U.S.):Motorcraft® Orange Prediluted Antifreeze/CoolantVC-3DIL-B
WSS-M97B44-D2Engine coolant (Canada):Motorcraft® Orange Prediluted Antifreeze/CoolantCVC-3DIL-B
WSS-M6C65-A11Brake fluid (U.S.):Motorcraft® High Performance DOT 3 Motor VehicleBrake FluidPM-1-C
WSS-M6C65-A11Brake fluid (Canada):Motorcraft® High Performance DOT 3 Motor VehicleBrake FluidCPM-1-C
WSS-M6C65-A32Brake fluid:Motorcraft® DOT 5.1 Motor Vehicle Brake FluidPM-21
WSL-M2C192-ARear axle lubricant (U.S.):Motorcraft® SAE 75W-140 Synthetic Rear Axle LubricantXY-75W140-QL
WSL-M2C192-ARear axle lubricant (Canada):
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SpecificationName
ESA-M1C75-BTransmission, steering, parking linkages and pivots andbrake pedal shaft grease:Premium Long-Life GreaseXG-1-E1
ESB-M1C93-BMulti-purpose grease:Motorcraft® Multi-Purpose Grease SprayXL-5-A
1 Motorcraft® DOT 3 High Performance Motor Vehicle Brake Fluid is for vehicles withHydroboost brake booster systems. This include chassis with gross vehicle weight ratingsof 16,000 lb (7257 kg), 18,000 lb (8165 kg) and 19,500 lb (8845 kg).2 Motorcraft® DOT 5.1 Motor Vehicle Brake Fluid is for vehicles with Hydromax brakebooster systems. This includes chassis with gross vehicle weight ratings of 19,500 lb(8845 kg), 20,500 lb (9299 kg), 22,000 lb (9979 kg), 24,000 lb (10886 kg) and 26,000lb (11793 kg).
If you use oil and fluids that do not meetthe defined specification and viscositygrade, this may lead to:
•Component damage which is notcovered by the vehicle warranty.
•Longer engine cranking periods.
•Increased emission levels.
•Reduced engine performance.
•Reduced fuel economy.
•Degraded brake performance.
We recommend Motorcraft® motor oil foryour vehicle. If Motorcraft® oil is notavailable, use motor oils of therecommended viscosity grade that meetAPI SN Plus requirements and display theAPI Certification Mark for gasoline engines.Do not use oil labeled with API SN Plusservice category unless the label alsodisplays the API certification mark.
An oil that displays this symbol conformsto current engine, emission system andfuel economy performance standards ofILSAC.
Do not use supplemental engine oiladditives because they are unnecessaryand could lead to engine damage that maynot be covered by your vehicle warranty.
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