Fuel And Engine Exhaust Precautions; Fuel Requirements - Mazda CX-9 Owner's Manual

CX-9_8CM9-EA-12I_Edition1 Page156
Thursday, September 13 2012 2:35 PM
Before Driving Your Mazda

Fuel and Engine Exhaust Precautions

Vehicles with catalytic converters or oxygen sensors must use ONLY UNLEADED FUEL,
which will reduce exhaust emissions and keep spark plug fouling to a minimum.
Fuel with a lower rating could cause the emission control system to lose effectiveness. It
could also cause engine knocking and serious engine damage.
Your Mazda will perform best with fuel listed in the table.
Fuel
Regular unleaded fuel
* U.S. federal law requires that octane ratings be posted on gasoline station pumps.
Fuel with a rating lower than 87 octane (91 RON) could cause the emission control system
to lose effectiveness. It could also cause engine knocking and serious engine damage.
CAUTION
Ø USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to the catalytic converter and oxygen sensors and will lead
to deterioration of the emission control system and or failures.
Ø Your vehicle can only use oxygenated fuels containing no more than 10 % ethanol
by volume. Damage to your vehicle may occur when ethanol exceeds this
recommendation, or if the gasoline contains any methanol. Stop using gasohol of
any kind if your vehicle engine is performing poorly.
Ø Never add fuel system additives. Otherwise, the emission control system could be
damaged. Consult an Authorized Mazda Dealer for details.
Gasoline blended with oxygenates such as alcohol or ether compounds are generally
referred to as oxygenated fuels. The common gasoline blend that can be used with your
vehicle is ethanol blended at no more than 10%. Gasoline containing alcohol, such as
ethanol or methanol, may be marketed under the name Gasohol .
Vehicle damage and drivability problems resulting from the use of the following may not
be covered by the Mazda warranty.
Gasohol containing more than 10% ethanol.
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Gasoline or gasohol containing methanol.
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Leaded fuel or leaded gasohol.
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Form No.8CM9-EA-12I

Fuel Requirements

Octane Rating
87 [ (R+M)/2 method] or above (91 RON or above)
Black plate (156,1)
*
(Anti-knock index)