Ford 2011 Flex v.1 Manuel d'utilisateur télécharger pdf (Page 359)

Choosing the right fuel

Use only UNLEADED fuel or UNLEADED fuel blended with a maximum

of 10% ethanol. Do not use fuel ethanol (E85), diesel, methanol, leaded

fuel or any other fuel. The use of leaded fuel is prohibited by law and

could damage your vehicle.

Your vehicle was not designed to use fuel or fuel additives with metallic

compounds, including manganese-based additives.

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.

Octane recommendations

3.5L V6 engine

Your vehicle will run normally on 87 octane regular fuel. Premium fuel

will provide improved performance.

3.5L V6 EcoBoost engine

Your vehicle is designed to run on regular fuel with an octane rating of

87 or higher. For best overall performance, premium fuel with an octane

rating of 91 or higher is recommended. The performance gained by using

premium fuel will be most noticeable in hot weather or in severe duty

applications such as towing a trailer.

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 for either engine. Do not be concerned if your

engine sometimes knocks lightly. However, if it knocks heavily while you

are using fuel with the recommended octane rating, see your authorized

dealer to prevent any engine damage.

Fuel quality

If you are experiencing starting, rough idle or hesitation driveability

problems during a cold start, try a different brand of unleaded gasoline.

If the problems persist, see your authorized dealer.

Do not add aftermarket fuel additive products to your fuel tank. It

should not be necessary to add any aftermarket products to your fuel

(R+M)/2 METHOD

Maintenance and Specifications

359

2011 Flex (471)

Owners Guide, 1st Printing

USA (fus)

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Ford 2011 Flex v.1 Manuel d'utilisateur Page 359