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Fue l supp ly a nd fillin g your fu e l tank
Fuel supply
and filling your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environment clean and
prevents engine damage.
Fu e l reco mm e nd a ti o n
The fue l recommended for your vehic le is unleaded premium grade
gaso line . See also ~ page 258, "Data". Audi recommends using TOP
TIER Detergent Gasoline with a minimum octane rating of 91 AKI (95
RON). For more information on TOP TIER Det ergent Gasoline, please
go to the official websi t e (www .toptiergas .coml.
The recommended gasoline octane rating for your engine can also
be found on a label located on the ins ide of the fuel fi ller fl ap. This
rating may be specified as AKI or RON.
Your vehicle may also be operated us ing un leaded regu lar gasoline
with a minimum octane rating of 87 AKl/91 RON. However, using 87
AKl/91 RON octane fue l will sl ight ly reduce eng ine performance .
Use unleaded gasoline only. Unleaded gaso li ne is available
throughout
the USA, Canada, and in most European countries . We
recommend that you do not take your vehicle to areas or countries
where unleaded gasoline may not be available.
For more information on refue ling your vehicle, see ~ page 189.
O c t ane ra tin g
Octane rating indicates a gaso line's abil ity to resist engi n e
damaging " knock" caused by premature ignition and detonation.
Therefore, buy ing the correct grade of gasoline is very important to
help prevent possible engine damage and a loss of engine perfor-
mance .
Gasoli ne most common ly used in the United States and Canada has
the following octane ratings that can usual ly be found on the fil ler
pump:
•
Premium Grade : 91 - 96 AKI
•
Regular Grade : 87 - 90 AKI
Explanation of the abbreviations :
AKI = A nti Knock Index = (R+Ml/2 = (RON+MON)/2
RON = Research Octane Number
MON = M otor Octane Number .
0
Not e
•
Do not use any fue l with octane ratings lower than 87 AKI or 91
RON otherwise expensive engine damage will occur .
•
Do not use leaded gaso line! The use of leaded gasoline w ill
severely damage your vehic le's cata lytic converter and its ability to
contro l exhaust emissions . •
Blended
gasoline
U se o f gaso line co nt a inin g a lco h o l or MTB E (m e th y l
t e rt iary but y l e th er)
You may use unleaded gaso line blended with alcohol or MTBE
(common ly referred to as oxygenates) if the blended mixture meets
the fo llowing criteria:
Blend of gasoline meth anol (woo d alcohol or methyl alcohol)
•
Anti-knock index must be 87 AKI or higher .
•
Blend must contain no more than 3% methanol.
•
Blend must contain more than 2% co-so lvents.
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