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Fuel and Refueling3.7L V6, 5.0L V8 and 6.2L V8 EnginesRegular unleaded gasoline with a pump(R+M)/2 octane rating of 87 isrecommended. Some stations offer fuelsposted as Regular with an octane ratingbelow 87, particularly in high altitude areas.Fuels with octane levels below 87 are notrecommended.3.5L V6 EcoBoost EngineRegular unleaded gasoline with a pump(R+M)/2 octane rating of 87 isrecommended. Some stations offer fuelsposted as Regular with an octane ratingbelow 87, particularly in high altitude areas.Fuels with octane levels below 87 are notrecommended.Premium fuel will provide improvedperformance and is recommended forsevere duty usage such as trailer tow.RUNNING OUT OF FUELAvoid running out of fuel. This situationmay have an adverse effect on powertraincomponents.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 fuel tank to the engine.On restarting, cranking time will take afew seconds longer than normal.• 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 82).• For information on calculating DTE(Distance to empty), See InstrumentCluster (page 81).Refilling With a Portable FuelContainerWARNINGSDo not insert the nozzle of portablefuel containers or aftermarketfunnels into the Easy Fuel “no cap”fuel system. This could damage the fuelsystem and its seal, and may cause fuel torun onto the ground instead of filling thetank, which could result in serious personalinjury.Do not try to pry open or push openthe Easy Fuel “no cap” fuel systemwith foreign objects. This coulddamage the fuel system and its seal andcause injury to you or others.Note: When filling the vehicle’s fuel tankfrom a portable fuel container, use thefunnel included with the vehicle.With the Easy Fuel “no cap” fuel system,use the following directions when fillingfrom a portable fuel container:E142668141F150 (TF6) , enUSA