2015 FORD SUPER DUTY octane

FUEL QUALITY
Note:Do not add after-market fuel additiveproducts to your fuel tank. We recommendthat you use only high quality fuel withoutafter-market additives or other enginetreatments.
Note:Your warranty will not cover anyvehicle damage, loss of vehicle performanceor repairs to your vehicle caused by the useof fuel not recommended.
Choosing the Right Fuel
Use only unleaded gasoline or unleadedgasoline blended with a maximum of 15%ethanol in your gasoline vehicle. If yourvehicle is a flex fuel vehicle (FFV), it willhave a yellow cap.
Do not use:
•Fuels containing more than 15%ethanol or E-85 fuel.
•Fuels containing methanol.
•Fuels containing metallic basedadditives, including manganese-basedcompounds.
•Fuels containing the octane boosteradditive, methylcyclopentadienylmanganese tricarbonyl (MMT).
•Prohibited by law, you cannot useleaded fuel.
Diesel Engine
Refer to the diesel supplement forinformation regarding diesel fuelrecommendations and requirements ofyour diesel-powered truck.
Choosing the Right Fuel With aFlex Fuel Vehicle (If Equipped)
Note:Flex fuel vehicles will have a yellowfuel cap.
Use only unleaded gasoline or unleadedgasoline blended with a maximum of 85%ethanol (E-85) in your flex fuel vehicle(FFV).
Do not use:
•Fuels containing more than 85%ethanol or E-100 fuel.
•Fuels containing methanol.
•Fuels containing metallic basedadditives, including manganese-basedcompounds.
•Fuels containing the octane boosteradditive, methylcyclopentadienylmanganese tricarbonyl (MMT).
•Prohibited by law, you cannot useleaded fuel.
Your warranty will not cover any vehicledamage, loss of vehicle performance orrepairs to your vehicle, caused by the useof fuel not recommended.
It is best not to alternate repeatedlybetween gasoline and E85. If you do switchfuels, it is recommended that you add asmuch fuel as possible—at least half a tank.Do not add less than 5.0 gal (18.9 L)whenrefueling. You should drive the vehicleimmediately after refueling for at least5.0 mi (8 km)to allow the vehicle to adaptto the change in ethanol concentration.The recommendation if you exclusively useE85 fuel, is to fill the fuel tank with regularunleaded gasoline at each scheduled oilchange.
Octane Recommendations
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We recommend regular unleaded gasolinewith a pump (R+M)/2 octane rating of 87.Some stations offer fuels posted as regularwith an octane rating below 87, particularlyin high altitude areas. We do notrecommend fuels with an octane ratingbelow 87.
Do not be concerned if your enginesometimes knocks lightly. However, if itknocks heavily under most drivingconditions while you are using fuel with therecommended octane rating, see yourauthorized dealer to prevent any enginedamage.
RUNNING OUT OF FUEL
Avoid running out of fuel because thissituation may have an adverse effect onpowertrain components.
If you have run out of fuel:
•You may need to cycle the ignition fromoff to on several times after refuelingto allow the fuel system to pump thefuel from the tank to the engine. Onrestarting, cranking time will take a fewseconds longer than normal. Withkeyless ignition, just start the engine.Crank time will be longer than usual.
•Normally, adding 1 gallon (3.8 liters) offuel is enough to restart the engine. Ifthe vehicle is out of fuel and on a steepgrade, more than 1 gallon (3.8 liters)may be required.
•The service engine soon indicator maycome on. For more information on theservice engine soon indicator, SeeWarning Lamps and Indicators(page 77).
Refilling With a Portable FuelContainer
WARNINGS
The fuel system may be underpressure. If the fuel filler cap isventing vapor or if you hear a hissingsound, wait until it stops before completelyremoving the fuel filler cap. Otherwise, fuelmay spray out and cause personal injury.
Do not try to pry open or push openthe fuel system with foreign objects.This could damage the fuel systemand its seal and cause personal injury toyou or others.
Use the following directions when fillingfrom a portable fuel container:
1.Remove the fuel cap from the fuel fillerpipe by rotating it counter clockwise.
2.Slowly insert the portable fuelcontainer into the fuel filler opening.
3.Fill the vehicle with fuel from theportable fuel container.
4.4. When done, remove the portablefuel container nozzle and reinstall fuelcap. Insert fuel cap into fuel filleropening and turn clockwise until a clickis heard.
REFUELING
WARNINGS
Fuel vapor burns violently and a fuelfire can cause severe injuries.
Read and follow all the instructionson the pump island.
Turn off your engine when you arerefueling.
Do not smoke if you are near fuel orrefueling your vehicle.
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ENGINE SPECIFICATIONS
6.8L V10 Engine6.2L V8 EngineEngine
413378Cubic inches
Minimum 87 octaneMinimum 87 octaneRequired fuel
1-6-5-10-2-7-3-8-4-91-5-4-8-6-3-7-2Firing order
Coil on plugCoil on plugIgnition system
0.039-0.043 inch (1.00-1.10mm)0.041-0.047 inch (1.04-1.20mm)Spark plug gap
9.2:19.8:1Compression ratio
Drivebelt Routing
6.2L Engines
6.8L Engines with A/C
6.8L Engines without A/C
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Fuel and Refueling.......................................136Fuel Consumption.......................................140Calculating Fuel Economy..............................140Filling the Tank....................................................140Fuel Filter........................................................244Fuel Quality.....................................................137Choosing the Right Fuel...................................137Choosing the Right Fuel With a Flex FuelVehicle (If Equipped)....................................137Diesel Engine........................................................137Octane Recommendations.............................137Fuel Shutoff....................................................213Fuses.................................................................223Fuse Specification Chart...........................223Passenger Compartment FusePanel..................................................................228Power Distribution Box....................................223
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Garage Door OpenerSee: Universal Garage Door Opener.............121Gauges................................................................75Engine Coolant Temperature Gauge.............76Engine Oil Pressure Gauge................................76Fuel Gauge..............................................................76Information Display..............................................77Transmission Fluid TemperatureGauge...................................................................76General Information on RadioFrequencies...................................................46General Maintenance Information.......440Multi-point Inspection.....................................442Owner Checks and Services...........................441Protecting Your Investment..........................440Why Maintain Your Vehicle?.........................440Why Maintain Your Vehicle at YourDealership?....................................................440Getting Assistance Outside the U.S. andCanada.........................................................220Getting the Services You Need................217Away From Home...............................................217Global Opening...............................................70Opening the Windows........................................70
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HandbrakeSee: Parking Brake.............................................163Hazard Warning Flashers...........................213HDCSee: Using Hill Descent Control....................170Head Restraints.............................................110Adjusting the Head Restraint...........................111Heated Seats..................................................116Rear Heated Seats ..............................................117Heated Steering Wheel................................62Heated Windows and Mirrors..................108Heated Exterior Mirror......................................108Heated Rear Window.......................................108HeatingSee: Climate Control.........................................103Hill Start Assist..............................................163Using Hill Start Assist.......................................163Hints on Controlling the InteriorClimate..........................................................106Cooling the Interior Quickly.............................107General Hints.......................................................106Heating the Interior Quickly............................106Recommended Settings for Cooling ..........107Recommended Settings for Heating..........107Side Window Defogging in ColdWeather............................................................108Hints on Driving With Anti-LockBrakes............................................................162Hood LockSee: Opening and Closing the Hood...........232
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Ignition Switch...............................................132In California (U.S. Only).............................218Information Display Control........................61Type 1.........................................................................61Type 2.......................................................................62Information Displays......................................81General Information.............................................81
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