Ford 2004 Ranger v.2 User Manual download pdf (Page 198)

The fuel system may be under pressure. If the fuel filler cap is

venting vapor or if you hear a hissing sound, wait until it stops

before completely removing the fuel filler cap. Otherwise, fuel may

spray out and injure you or others.

If you do not use the proper fuel filler cap, excessive pressure or

vacuum in the fuel tank may damage the fuel system or cause

the fuel cap to disengage in a collision, which may result in possible

personal injury.

Choosing the right fuel

Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law

and could damage your vehicle.

Do not use fuel containing methanol. It can damage critical fuel system

components.

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

compounds, including manganese-based additives.

Repairs to correct the effects of using a fuel for which your vehicle was

not designed may not be covered by your warranty.

Octane recommendations

Your vehicle is designed to use

“Regular” unleaded gasoline with

pump (R+M)/2 octane rating of 87.

We do not recommend the use of

gasolines labeled as “Regular” that

are sold with octane ratings of 86 or lower in high altitude areas.

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 dealer or a qualified

service technician to prevent any engine damage.

Fuel quality

If you are experiencing starting, rough idle or hesitation driveability

problems, try a different brand of unleaded gasoline. “Premium”

unleaded gasoline is not recommended for vehicles designed to use

“Regular” unleaded gasoline because it may cause these problems to

become more pronounced. If the problems persist, see your dealer or a

qualified service technician.

(R+M)/2 METHOD

2004 Ranger (ran)

Owners Guide (post-2002-fmt)

USA English (fus)

Maintenance and Specifications

198

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Ford 2004 Ranger v.2 User Manual Page 198