1997 Mercury Sable Owner's Manual - Page 136

1997 Mercury Sable Manual

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Maintenance and care engine will perform adequately on other gasolines, the performance of the emission control devices and systems may be adversely affected. Repair of damage caused by using a fuel that your vehicle was not designed for may not be covered by your warranty. Octane recommendations Your vehicle is designed to use regular gasoline with an (R+M)/2 octane rating of 87. We do not recommend gasolines labeled as "regular" in high altitude areas that are sold with octane ratings of 86 or even less. Do not be concerned if your vehicle sometimes knocks lightly. However, if it knocks heavily under most driving conditions on the recommended octane fuel, see your dealer or a qualified service technician to prevent any engine damage. 87 Fuel quality If you are experiencing starting, rough idle or hesitation problems try a different brand of fuel. If the condition persists, see your dealer or a qualified service technician. The American Automobile Manufacturers Association (AAMA) issued a gasoline specification to provide information on high quality fuels that optimize the performance of your vehicle. We recommend the use of gasolines that meet the AAMA specification if they are available. It should not be necessary to add any aftermarket products to your fuel tank if you continue to use a high-quality fuel. 136

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engine will perform adequately on other gasolines,
the performance of the emission control devices and
systems may be adversely affected. Repair of
damage caused by using a fuel that your vehicle was
not designed for may not be covered by your
warranty.
Octane recommendations
Your vehicle is
designed to use regular
gasoline with an
(R+M)/2 octane rating
of 87. We do not
recommend gasolines
labeled as “regular” in
high altitude areas that
are sold with octane
ratings of 86 or even less.
Do not be concerned if your vehicle sometimes
knocks lightly. However, if it knocks heavily under
most driving conditions on the recommended octane
fuel, see your dealer or a qualified service technician
to prevent any engine damage.
Fuel quality
If you are experiencing starting, rough idle or
hesitation problems try a different brand of fuel. If
the condition persists, see your dealer or a qualified
service technician.
The American Automobile Manufacturers Association
(AAMA) issued a gasoline specification to provide
information on high quality fuels that optimize the
performance of your vehicle. We recommend the use
of gasolines that meet the AAMA specification if
they are available.
It should not be necessary to add any aftermarket
products to your fuel tank if you continue to use a
high-quality fuel.
87
Maintenance and care
136