Fuel Supply And Filling Your; Gasoline - Audi AS Coupe 2014 Owner's Manual

Fuel supply and fill ing
your f u el tank
Gasoline
Fuel supply
Using the right fuel helps keep the environ-
ment clean and prevents engine damage.
Fuel recommendation
The fuel recommended
for you r vehicle is un-
leaded premium g rade gasolin e . Audi recom-
mends us ing TOP TIER Det ergent Gaso line
with a m inim um oc t ane ra t ing of 9 1 AKI (9 5
RON) . For more inform at ion o n TOP TIER De-
tergent Gasoline, please go t o t he off icial
website (www.toptie rgas .com) .
The recommended gasoline octane rating for
your en gi ne can al so be fo und o n a label loca t-
ed on t he ins ide of the fuel filler flap . This ra t-
ing may be specif ied as AKI or RON.
Your veh icle may al so be operated using un-
leaded regular gasoline w ith a min imum oc-
tane rating of 8 7 AKI/91 RON. However, using
87 AKI/ 9 1 RON octa ne fue l w ill slightly re-
d uce eng ine perfo rmance .
Use unleaded ga solin e only. Unleaded gaso-
line is available th rougho ut t he USA, Canada,
and in most Eur opean countries . We recom-
mend that you do not ta ke yo ur ve hicle to
areas or co untries where unleaded gasoline
may not be ava ilable.
For mo re informat ion on refue ling your ve hi-
cle, see ~
page 203.
Octane rating
Octane rati ng indi cates a gaso line's abili ty to
res ist engi ne da m ag ing "knoc k" ca use d by
premature ign ition and detona t ion. Therefore,
buying the correct grade of gaso line is very
important to he lp prevent possible engine
damage and a loss of engine performance.
Gasoline mos t common ly used in t he Unite d
States an d Canada has the following octane
ratings that ca n usua lly be fo und on the filler
pump:
Fuel supply and filling your fuel tank 201
- Premium Grade: 9 1 - 96 AKI
- Regular Grade: 87 - 90 AKI
Explanation of the abb reviations :
AKI = Anti Knock I ndex = (R+M)/2 = (RON
+MON)/2
RON = Research Octane Num ber
MON = Motor Octane Number.
@
Note
- Do not use a ny fue l w it h octane rat ings
lower than 8 7 AKI or 9 1 RON oth er wise
ex pensive engi ne da m age w ill occu r.
- Do not use leaded gasoli ne. The use of
leade d gasoline w ill severely damage
yo ur vehicle's cata lyt ic co nve rter an d its
ability t o con trol exh aus t emi ssion s .
Blended gasoline
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether )
You may use unleaded gasoline blended with
a lcohol or MTBE (commonly referred to as
oxygenates) if the blended m ixture meets the
fo llow ing criter ia:
Blend of gasoline methanol (wood alcohol or
methyl alcohol )
- Anti -kno ck index mus t be 87 AKI or higher.
- Blend mus t contain no more t han 3% me t h-
a nol.
- Blend must contain more t han 2% co-sol-
vents.
Blend of gasoline and ethanol (grain alcohol
or ethyl alcohol)
- Anti-knock index must be 87 AKI or higher.
- Blend must not conta in more than 10%
ethanol.
- Vehicles w ith flex ible fuel e ngine : blend
m ust not contain more t han 85% ethanol.
Blend of gasoline and MTBE
- Anti-knoc k index must be 87 AKI or higher.
- Blend must contain no t mo re tha n 15%
MTBE.
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