Table of Contents
Advertisement
Fuel and Refueling
Fuel and Refueling
Fuel
Fuel supply
Using the right fuel helps keep the environment
clean and prevents engine damage.
Fuel recommendation
The fuel recommended for your vehicle is unlead-
ed premium grade gasoline. Audi recommends
using TOP TIER Detergent Gasoline with a mini-
mum octane rating of 91 AKI (95 RON). For more
information on TOP TIER Detergent Gasoline,
please go to the official website
(www.toptiergas.com).
The recommended gasoline octane rating for
your engine can also be found on a label located
on the inside of the fuel filler flap . This rating
may be specified as AK I or RON.
Your vehicle may also be operated using unlead-
ed regular gasoline with a minimum octane rat-
ing of 87 AKl/91 RON . However, using 87 AKI/91
RON octane fuel will slightly reduce engine per-
formance.
Use unleaded gasoline only. Unleaded gasoline
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 un leaded gaso line may not be available.
For more information on refueling your vehicle,
see
r::;,
page 190.
Octane rating
Octane rating indicates a gasoline's ability to re-
sist engine damaging "knock" caused by prema-
ture ignit ion and detonation . Therefore, buying
the correct grade of gasoline is very important to
help prevent poss ible engine damage and a loss
of engine performance.
Gasoline most commonly used in the United
States and Canada has the following octane rat-
ings that can usually be found on the filler pump:
- Premium Grade: 91 - 96 AKI
- Regular Grade: 87 - 90 AKI
188
Explanation of the abbreviations:
AKI= Anti Knock Ind ex= (R+M)/2 = (RON +MON)/
2
RON= Research Octane Number
MON= Motor Octane Number.
CJ)
Note
- Do not use any fue l with octane ratings low-
er than 87 AKI or 91 RON otherwise expen-
sive engine damage will occur.
- Do not use leaded gasoline. The use of lead-
ed gasoline will severely damage your vehi-
cle's catalytic converter and its ability to
control exhaust emissions.
Blended gasoline
Use of gasoline containing alcohol or MTBE
(methyl tertiary butyl ether)
You may use unleaded gasoline blended with al-
cohol or MTBE (commonly referred to as oxygen-
ates) if the blended mixture meets the following
criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
- Anti-knock index must be 87 AKI or higher.
- Blend must contain no more than 3% metha-
nol.
- Blend must contain more than 2% co-solvents.
Blend of gasoline and ethanol (grain alcohol or
ethyl alcohol)
- Anti-knock index must be 87 AK I or higher.
- Blend must not contain more than 15% etha-
nol.
- Vehicles with flexib le fue l eng ine: blend must
not contain more than 85% ethanol.
Blend of gasoline and MTBE
- Anti-knock index must be 87 AKI or higher.
- Blend must contain not more than 15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform es-
pecially well for winter or summer driving . Dur-
ing seasonal change-ove r, we suggest that you
.,.
Advertisement
Table of Contents
