Audi 100 Quattro, Руководство пользователя

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VEHICLE CARE
FUEL SUPPLY
91
Your vehicle is equipped with a cataly-
tic converter and requires unleaded
fuel
. For maximum engine performance,
unleaded premium fuel with an octane
rating of 95 RON or 91 AKI is recom-
mended.
You may also use unleaded regular fuel
with a minimum octane rating of 91 RON
which corresponds to an anti-knock index
(AKI) of 87.
See also "Digital Electronic Ignition" page
155.
ries where unleaded fuel may
s abi-
lity to resist detonation. Therefore, buying
the correct octane gas is
e an octane rating
ranging from 91 to 95 RON (Research
Octane Number) or 87 to 91 AKI.
Do not use any fuel with octane ra-
tings lower than 91 RON or 87 AKI.
Gasolines containing alcohol
Gasoline containing alcohol is available
at gas stations in some areas. The gas
pump may not be labeled to identify that
alcohol is present in the gasoline. If it is
labeled, it may not identify what amount
and type(s) of alcohol are used. We
recommend you use quality gasoline that
is
NOT blended with alcohol. The use of
fuel containing alcohol can cause loss of
fuel economy and driveability and perfor-
mance problems. If these problems are
experienced, we recommend you switch
to another brand of gasoline.
i-
major concern among many auto
manufacturers is carbon deposit build-up
he type of gasoline you use.
t on fuel injectors and intake valves.
Although most gasoline brands inclu-
de additives to keep engine and fuel
systems clean, they are not equally
effective
.
After an extended period of using ina-
dequate fuels, built-up carbon deposits
can rob your engine of peak performa-
nce. And carbon deposits like those in
the illustration can lead to other engine
performance problems such as:
Do not use leaded gasolines.
Deposits from leaded gasolines deacti-
vate the catalytic converter and thus de-
feat its purpose to control exhaust emis-
sions.
Unleaded fuels may not be available
outside the continental USA and Ca-
nada. Therefore, we recommend you
do not take your vehicle to areas or
count
not be available.
Octane rating
Octane rating indicates a gasoline'
important to prevent engine "knock",
which reduces performance and may
cause engine damage.
The 91 RON octane rating which you will
find on the inside of the fuel tank flap is
based on the research method. The AKI
octane rating usually displayed on U.S.
gasoline pumps is calculated as follows:
Research octane number plus motor
octane number, divided by 2.
Regular fuels hav
Seasonally adjusted gasoline
Many gasolines are blended to perform
especially well for winter or summer dr
ving. During seasonal change-over, we
suggest that you fill up at busy gas sta-
tions where the seasonal adjustment is
more likely to be made in time.
Gasoline Additives
A
caused by t
Although gasolines differ from one manu-
facturer to another, they do have one
thing in common. All gasolines contain
properties that can cause deposits to
collec