technical specifications AUDI S8 2009 Owners Manual

Fuel supply and filling your fuel tank
Blend of gasoline and ethanol (grain alcohol or ethyl alcohol}
• Anti-knock index must be 87 AKI or higher.
• Blend must not contain more than 10% 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 especially well for
winter or summer driving. During seasonal change -over, we suggest
that you fill up at busy gas stations where the seasonal adjustment
is more likely to be made in time.
0 Note
• Methanol fuels which do not meet these requirements may
cause corrosion and damage to plastic and rubber components in
the fuel system.
• Do not use fuels that fail to meet the specified criteria in this
chapter.
• If you are unable to determine whether or not a particular fuel
blend meets the specifications, ask your service station or its fuel
supplier.
• Do not use fuel for which the contents cannot be identified.
• Fuel system damage and performance problems resulting from
the use of fuels different from those specified are not the responsi ­
bility of Audi and are not covered under the New Vehicle or the
Emission Control System Warranties.
• If you experience a loss of fuel economy or driveability and
performance problems due to the use of one of these fuel blends,
we recommend that you switch to unblended fuel. •
Gasoline additives
A major concern among many auto manufacturers is carbon
deposit build-up caused by the type of gasoline you use.
Although gasoline grades differ from one manufacturer to another,
they have certain things in common. All gasoline grades contain
substances that can cause deposits to collect on vital engine parts,
such as fuel injectors and intake valves. Although most gasoline
brands include additives to keep engine and fuel systems clean,
they are not equally effective.
Audi recommends using TOP TIER Detergent Gasoline. For more
information on TOP TIER Detergent Gasoline, please go to the offi­
cial website (www.toptiergas.com).
After an extended period of using inadequate fuels, carbon deposit
build-ups can rob your engine of peak performance.
(D Note
Damage or malfunction due to poor fuel quality is not covered by
the Audi New Vehicle Limited Warranty. •
Fuel tank
Fuel filler neck
The fuel filler neck is located on the right rear side panel behind the
fuel filler flap.
If the power locking system should fail, you can still open the flap
manually - for detailed instructions see=>
page 307.
You can find the fuel tank capacity of your vehicle in Technical Data
=> page 380. .,_

Checking and filling -
------------- ----=-----= =-----...J
& WARNING
Before y ou che ck an ything in the eng ine comp artment , alw ays
read and heed all WARNING S
~ & in "W orkin g in the engin e
c ompartment " on
page 309. •
App lies to ve hic les : with 1 2-cy lin d er engine
Engine compartment overview : 1 2-cylinder
engine
These are the most important items tha t you can check.
Fig . 264 Typical layo ut fo r c ontain ers, engi ne oil dip st ick a nd e ngine o il filler
ca p
G) Windshield/head light washer container ( Q ) . . . . . . . . 325
@ Brake fluid reservoir ( l . . . . . . . . . . . . . . . . . . . . . . . . 319
© Engine oi l dipstick (orange) . . . . . . . . . . . . . . . . . . . . . . 313
© Engine oil fi ller cap ('t=:11) .. .. ... ... .... .. .. ... .. . .
© Coolan t expansion tank(_}_ ) ... ........ .... ... ... .
& WARNING
Before you check anything in th e engine co mpartment , alw ays
r e a d and heed all WARNIN GS
~ & in " Worki ng i n t he engin e
c ompartm ent " on
page 309.
[ i ] Tip s
The coo lant expansion tank is located under a cover .•
Engine oil
Engine oil specifications
314
317
The engine oil us ed in your Audi needs the right kind of
oil.
Th e engin e in your Audi is a soph isticat ed pow erplant that was built
to exacting specifications . This engine needs the right kind of
e ngine o il that meets specifications regarding quality and v iscosity
so that it can run smoothly and re liably. Choosing the righ t oil and
changing o il wi thin the time and mileage interva ls printed in your
vehicle's Warranty
& Ma intenance book let matte rs a lot more today
than it did years ago . Audi has developed a special quality standard
for engine oil that wil l help assure that your vehicle's engine wi ll get
the lub rication it needs for proper operation .
Modern engin e lubrication has taken a quantum leap in the last few
years . Many syn thetic oils ava ilable today provide better engine
lubrica tion that can outlas t traditional petroleum-based oils,
making them a smart choice for use throughout the life of your Audi.
Whether you use synthetic or petroleum -based engine oil , the oil
that you use must conform to Audi's oi l quality standard VW 502 00
ti,,,
Vehic le care I I Technical data

________________________________________________ A_l.,_p _h_ a_ b_e _ t_ i_ c _a _l_ i_n _d_ e_ x __ _
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Compartments in the door trim panels .
111
Compartments in the rear doors ... . 111
Cupholder .. ...... .... ...... .... . 105
Cupholder rear cente r armrest .. ... 105
Glove compartment ............... 109
Luggage compartment ........ .... 112
Ski sack . . . . . . . . . . . . . . . . . . . . . . . . . 102
Sma II objects . . . . . . . . . . . . . . . . . . . . 110
Sun shade .......... ....... .... .... . 78
Sun visors .......................... 77
Switches
Emergency flashers ................
73
Power sunroof .... ... ... ... .. ... .. 65
Rear window defogger .... ........ 124
Symbols
Red ......... .... ....... .... .....
30
Ye llow ........................... 34
T
Tachometer ..... .... .... ............ 13
Technical modifications ...... ...... .. 385
Temperature
Climate controls .. .... .... ..... ...
117
Setting for the driver's and front passen-
ger's side ......................
117
Tether strap ............. ........... 265
Securing the upper tether strap 266
The first 1,000 miles (1,500 km) and
afterwards .....................
279
Tie -down eyelets ................ 100, 209
Controls and equip­ ment Safety first
Tips
for the environment
Saving fuel ... ... .... ...... ......
104
Using the air conditioner only when
necessary ......... ...... .... .. .
. . ® t1ptronic ......................... .
Au tomatic Shift Lock (ASU ... ... .. .
123
166
168
Driving ........ .... ... .... ....... 166
Dynamic shift program ...... ...... 169
Fail -safe mode ......... ...... .... 171
Kick -down .. ...... .... .... ..... .. 169
Manual shift program ..... .... .... 170
Selector lever .................... 167
Tire pressure ... .... ... .. .... .... ... 333
Tire pressure monitoring system ....... 41
Displaying tire pressures .... ..... .. 44
Initialize wheels ........... ....... . 45
Learning process ...... ....... ..... 44
Loss of air pressure ............. 20, 43
Malfunctions ... .. .... .... ....... . 46
Tires and vehicle load limits .. .. .. .... 335
Tires and wheels
Checking tire pressure ... .. .... ...
333
Cold tire inflation pressure ......... 330
Dimensions ...................... 338
General notes ...... .............. 326
Glossary of tire and loading terminology
327
New tires and wheels ........ .... . 338
Replacing ..... .. .... .... .... .... 339
Snow chains .......... .... .... ... 344
Ti re pressure monitoring system .... 340
Tires and vehicle load limits ........ 335
Wheel bolts ... .... .... ..... .. .... 345
Winter tires ........... ...... ..... 343
Tires/Wheels
Low aspect ratio tires ... .. .... ....
345
Tools .............................. 352
Torn or frayed safety belts ........ .... 214
Sensors ............ · · · · · · · · · · · · · 340 Touch -up paint ... .. .... .... .... .... 294
Storing tire pressures ..... .... .... . 44 Towing
Tires and wheels .................
340 Tow truck procedures ............. 368
Valves ...... ....... ...... .... ... 340 Towing hitch
Tire service life ........ .... ... .. ....
337 Audi parking system ... ...... .... . 183
Tires .... ...... ......... .... ....... 326 Towing loop ........................ 369
Replacing ....................... 340 front .... ... .. .... .... ..... .. .... 369
Service life ........ .. ....... ..... 337 rear ... ... .... ....... ...... ..... 370
speed rating letter code ..... ...... 340 Trailer towing ....................... 284
Tire manufacturing date .. ........ . 340
Tire specifications . .... ........... 339
Tread depth .......... .... ... .... 337
Uniform tire quality grading .... .... 342
Winter tires ........ ... .... .... ... 343
Operating instructions . .... ....... 285
Technical requirements . ...... 284, 285
Trailer towing tips ........ .... .... 286
Train
Transporting your vehicle .. ........
371
Vehicle operation Vehicle care Do-it-yourself service Technical data