Mazda 4WD manual Fuel quality, Running out of fuel, Essentials of Good Fuel Economy, 240

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Maintenance and Specifications

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.

Fuel quality

If you are experiencing starting, rough idle or hesitation driveability problems, try a different brand of unleaded gasoline. ªPremiumº unleaded gasoline is not recommended for vehicles designed to use ªRegularº unleaded gasoline because it may cause these problems to become more pronounced. If the problems persist, see your authorized dealer.

It should not be necessary to add any aftermarket products to your fuel tank if you continue to use high quality fuel of the recommended octane rating. Aftermarket products could cause damage to the fuel system.

Repairs to correct the effects of using an aftermarket product in your fuel may not be covered by your warranty.

Many of the world's automakers approved the World-wide Fuel Charter that recommends gasoline specifications to provide improved performance and emission control system protection for your vehicle. Gasolines that meet the World-wide Fuel Charter should be used when available. Ask your fuel supplier about gasolines that meet the World-wide Fuel Charter.

Running out of fuel

Avoid running out of fuel because this situation may have an adverse effect on powertrain components.

If you have run out of fuel:

•You may need to cycle the ignition from OFF to ON several times after refueling, to allow the fuel system to pump the fuel from the tank to the engine.

•The indicator may come on. For more information on the ªCheck Engineº indicator, refer to the Instrument Cluster chapter.

ESSENTIALS OF GOOD FUEL ECONOMY

Measuring techniques

Your best source of information about actual fuel economy is you, the driver. You must gather information as accurately and consistently as possible. Fuel expense, frequency of fillups or fuel gauge readings are

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(OLD=2005 B-Series fus Owners Guide (post-2002-fmt) 2nd Printing (#24721) (Nov-24-2004 11:18:53))

(NEW=2006 B-Series fus Owners Guide (post-2002-fmt) 2006 MBS CNE (#NoEntry) (Apr-12-2005 14:48:18)) 2006 B-Series(mbs), Owners Guide (post-2002-fmt)(own2002), Market: USA (fus)