Ford 2011 Crown Victoria v.3 Manuel d'utilisateur télécharger pdf (Page 249)

Note: Use of any fuel other than those recommended may cause

powertrain damage, a loss of vehicle performance, and repairs may not

be covered under warranty.

Cleaner air

Ford endorses the use of reformulated “cleaner-burning” gasolines to

improve air quality, per the recommendations in the Choosing the right

fuel section.

Octane recommendations

Your vehicle is designed to use “Regular” unleaded gasoline with a pump

(R+M)/2 octane rating of 87. Some stations offer fuels posted as

“Regular” with an octane rating below 87, particularly in high altitude

areas. Fuels with octane levels below 87 are not recommended.

Do not be concerned if your engine

sometimes knocks lightly. However,

if it knocks heavily under most

driving conditions while you are

using fuel with the recommended

octane rating, see your authorized dealer to prevent any engine damage.

FFV engine (if equipped)

If your vehicle is flex fuel capable, it is designed to use Fuel Ethanol

(Ed75–Ed85), “Regular” unleaded gasoline or any mixture of the two

fuels.

Use of other fuels such as Fuel Methanol may cause powertrain

damage, a loss of vehicle performance, and your warranty may be

invalidated.

It is best not to alternate repeatedly between gasoline and E85. If you do

switch fuels, it is recommended that you add as much fuel as

possible—at least half a tank. Do not add less than five gallons (18.9L)

when refueling. You should drive the vehicle immediately after refueling

for at least 5 miles (8 km) to allow the vehicle to adapt to the change in

ethanol concentration.

If you exclusively use E85 fuel, it is recommended to fill the fuel tank

with regular unleaded gasoline at each scheduled oil change.

Fuel quality

Unleaded gasoline engines

If you experience starting, rough idle or hesitation driveability problems

during a cold start, try a different brand of “Regular” unleaded gasoline.

(R+M)/2 METHOD

Maintenance and Specifications

249

2011 Crown Victoria (cro)

Owners Guide, 3rd Printing

USA (fus)

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Ford 2011 Crown Victoria v.3 Manuel d'utilisateur Page 249

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