Octane Recommendations; Fuel Quality - Mazda 2005 Tribute Owner's Manual

Studies indicate that these additives can cause your vehicle's
emission control system to deteriorate more rapidly. In Canada,
premium grade fuel generally contains more metallic additives
than regular fuel. We recommend using regular grade fuel. In
Canada, many fuels contain metallic additives, but fuels free of
such additives may be available; check with your local fuel dealer.
• Do not use fuel containing methanol. It can damage critical fuel
system components.
• 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.
NOTE: 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
Mazda dealer to prevent any engine damage.

Fuel quality

NOTE: If you are experiencing starting, rough idle or hesitation
driveability problems during a cold start, try a different brand of
"Regular" unleaded gasoline. "Premium" unleaded gasoline is not
recommended (particularly in the United States) because it may cause
these problems to become more pronounced. If the problems persist, see
your authorized Mazda 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.
REVIEW COPY
2005 Mazda Tribute (j14), Owners Guide (post-2002-fmt) (own2002),
Market: USA_English (fus)
Maintenance and Specifications
87
(R+M)/2 METHOD
241