technical data NISSAN QUEST 1998 V40 / 1.G Owners Manual

Gasoline containing oxygenates
Some fuel suppliers sell gasoline containing
oxygenates such as ethanol, MTBE and
methanol with or without advertising their
presence. NISSAN does not recommend
the use of fuels of which the oxygenate
content and the fuel compatibility for your
NISSAN cannot be readily determined. If in
doubt, ask your service station manager.
If you use oxygenate-blend gasoline, please
take the following precautions as the usage
of such fuels may cause vehicle perfor-
mance problems and/or fuel system dam-
age.
cThe fuel should be unleaded and have
an octane rating no lower than that
recommended for unleaded gasoline.
cIf an oxygenate-blend, excepting a
methanol blend, is used, it should
contain no more than 10% oxygenate.
(MTBE may, however, be added up to
15%.)
cIf a methanol blend is used, it should
contain no more than 5% methanol
(methyl alcohol, wood alcohol). It
should also contain a suitable amount
of appropriate cosolvents and corro-sion inhibitors. If not properly formu-
lated with appropriate cosolvents and
corrosion inhibitors, such methanol
blends may cause fuel system dam-
age and/or vehicle performance prob-
lems. At this time, sufficient data is
not available to ensure that all metha-
nol blends are suitable for use in
NISSAN vehicles.
If any undesirable driveability problems
such as engine stalling and difficult hot-
starting are experienced after using
oxygenate-blend fuels, immediately change
to a non-oxygenate fuel or a fuel with a low
blend of MTBE.
Take care not to spill gasoline during
refueling. Gasoline containing oxygen-
ates can cause paint damage.
Aftermarket fuel additives
NISSAN does not recommend the use of
any fuel additives (i.e.: fuel injector cleaner,
octane booster, intake valve deposit remov-
ers, etc.) which are sold commercially.
Many of these additives intended for gum,
varnish or deposit removal may contain
active solvents or similar ingredients thatcan be harmful to the fuel system and
engine.
Octane rating tips
In most parts of North America, you should
use unleaded gasoline with an octane rating
of at least 87 AKI (Anti-Knock Index) num-
ber. However, you may use unleaded gaso-
line with an octane rating as low as 85 AKI
(Anti-Knock Index) in high altitude areas
(over 4,000 ft [1,219 m]) such as: Colorado,
Montana, New Mexico, Utah, Wyoming,
northeastern Nevada, southern Idaho,
western South Dakota, western Nebraska,
and the part of Texas which is directly south
of New Mexico.
Using unleaded gasoline with an octane
rating lower than stated above can cause
persistent, heavy ``spark knock.'' (``Spark
knock'' is a metallic rapping noise.) If
severe, this can lead to engine damage. If
you detect a persistent heavy spark
knock even when using gasoline of the
stated octane rating, or if you hear steady
spark knock while holding a steady
speed on level roads, have an authorized
NISSAN dealer correct the condition.
Failure to correct the condition is misuse
Technical and consumer information10-3
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