engine oil AUDI S8 2008 Owner's Manual

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&, WARNING (continued)
• When removing the oil drain plug with your fingers, stay as far
away as possible. Always keep your forearm parallel to the ground
to help prevent hot oil from running down your arm.
• Drain the oil into a container designed for this purpose, one
large enough to hold at least the total amount of oil in your engine.
• Engine oil is poisonous. Keep it well out of the reach of children.
• Continuous contact with used engine oil is harmful to your
skin. Always protect your skin by washing oil off thoroughly with
soap and water.
0 Note
Never mix oil additives with your engine oil. These additives can
damage your engine and adversely affect your Audi Lim ited New
Vehicle Warranty.
<£> For the sake of the environment
• Before changing your oil, first make sure you know where you
can properly dispose of the used oil.
• Always dispose of used engine oil properly. Do not dump it on
garden soil , wooded areas , into open streams or down sewage
drains.
• Recycle used engine oil by taking it to a used engine oil collec­
tion facility in your area, or contact a service station. •
Engine cooling system
Coolant
The engine coolant performs two functions: it keeps the
engine from overheating and it protects the engine from
freezing in the winter.
The cooling system is sealed and generally requires little attention.
The cooling system has been filled at the factory with a permanent
coolant which does not need to be changed . The coolant consists of
a mixture of water and the manufacturer's glycol -basedcoolant
additive G12 ++ antifreeze with anti corrosion addi tives (50% for USA
models; 60% for Canadian models). This mixture both assures the
necessary frost protection and protects metal components in the
engine's cooling system from corrosion and scaling. It also raises
the boiling point of the coolant.
Do not reduce the concentration of the coolant in the summer by
adding plain water.
The proportion of coolant additive must be at
least 50% but not more than 60%
to maintain antifree ze protection
and cooling efficiency. If the coolant frost protection is too low, the
coolant could freeze and damage the vehicle heating and engine
cooling system.
For year-round driving, antifreeze is added at the factory for temper­
atures down to :
• -31 °F ( -35 °C) USA
•
-40 °F ( -40 °C) Canada .
You can mix the G12 ++ coolant additive with other additives (G12 +
or G12). Always check with your authori zed Audi dealer .
& WARNING
Before you check anything in the engine compartment, always
read and heed all WARNINGS
~ & in "Working in the engine
compartment" on
page 307.

___________________________________________ C;:_:_: h..:e ..:c :..;.k..: i_n ..::g :.._ a_n _d_ f_il _li _n ..::g :.._--JIIIII
0 Note
• Before winter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions. This is especially important if you live in a region where
the winter is extremely cold. If necessary , increase the proportion of
coolant additive to 60%.
• When adding coolant additive to your cooling system,
remember:
-We recommend using only coolant additive G12+ + (check the
label) for your vehicle. This coolant additive is available at autho­
rized Audi dealers. Other types of antifreeze can significantly
reduce corrosion protection . The resulting corrosion can cause a
loss of coolant and serious engine damage .
• Do not add any type of radiator leak sealant to your vehicle's
engine coolant. Adding radiator repair fluid may adversely affect the
function and performance of your cooling system and could result
in damage not covered by your New Vehicle Limited Warranty .•
Checking the engine coolant level
The engine coolant level can be checked with a quick
glance.
Fig . 267 Engine
compartment : Coolant
expansion tank
Before you check anything in the engine compartment,
always read and heed all WARNINGS => & in "Working in
the engine compartment" on
page 307.
Turn off the ignition.
Read the engine coolant level from the coolant expan­
sion
tank => fig. 267 . With a cold engine, the coolant level
should be between the "min" and "max" markings. When
the engine is warm, the level may be slightly above the
"max" marking.
The location of the coolant expansion tank can be seen in the
engine compartment illustration =>
page 308.
To obtain an accurate reading, the engine must be switched off.
The expansion tank in your vehicle is equipped with an electric
coolant level sensor.
When the coolant level is too low, the warning light in the Auto­
Check
System => page 31 will blink until you add coolant and the
level has been restored to normal. Even though there is an electric
coolant level sensor, we still recommend you check the coolant level
from time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling system. In the event
of coolant loss, the cooling system should be inspected immedi­
ately by your authorized Audi dealer . It is not enough merely to add
coolant .
In a
sealed system, losses can occur only if the boiling point of the
coolant is exceeded as a result of overheating.
& WARNING
The cooling system is under pressure and can get very hot. Reduce
the risk of scalding from hot coolant by following these steps.
.,_
Vehic le care I I Technical data

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-Read the brake fluid level from the brake fluid reservoir
=> fig. 268. The brake fluid level must be between the
"MIN" and "MAX" markings.
The brake fluid reservoir is located at the rear partition of the engine
compartment on the left
side~ page 308.
The fluid level may drop slightly after some time due to the auto­
matic adjustment of the brake pads. This is not cause for alarm.
If the brake fluid level falls considerably below the "MIN" mark, the
brake warning/indicator light (U.S. models:
BRAKE , Canadian models:
«D>l will come on~ page 22 and~ page 30. Do not continue to
operate the vehicle. The complete brake system should be thor­
oughly checked by an authorized Audi dealer or other qualified
facility and the cause corrected. If the brake fluid level is too low, the
brake warning/indicator light will illuminate. Contact an authorized
Audi dealer
immediately. •
Changing brake fluid
Have the brake fluid changed by an experienced techni­
cian.
Brake fluid absorbs moisture from the air. If the water content in the
brake fluid is too high, corrosion in the brake system may result
after a period of time. The boiling point of the brake fluid will also
decrease considerably and decrease braking performance.
Therefore, the brake fluid must be changed
every two years. Always
use new brake fluid which conforms to Federal Motor Vehicle Stan­
dard "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficult to reach, therefore, we
recommend that you have the brake fluid changed by your autho­
rized
Audi dealer. Your dealer has the correct tools, the right brake
fluid and the know-how to do this for you.
& WARNING
• Brake fluid is poisonous . It must be stored only in the closed
original container out of the reach of children!
• Brake failure can result from old or inappropriate brake fluid .
Observe these precautions:
-Use only brake fluid that meets SAE specification J 1703 and
conforms to Federal Motor Vehicle Standard 116. Always check
with your authorized Audi dealer to make sure you are using
the correct brake fluid. The correct type of brake fluid is also indicated on the brake fluid reservoir .
- The brake fluid must be new. Heavy use of the brakes can
cause a vapor lock if the brake fluid is left in the system too
long. This can seriously affect the efficiency of the brakes as
well as your safety . This could result in an accident .
0 Note
Brake fluid will damage the paint of your vehicle .
<£> For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special tools required and the necessary expertise, we recom ­
mend that you have the brake fluid changed by your authorized Audi
dealer. •
Battery
General information
Under normal operating conditions, the battery in your Audi does
not need any maintenance. With high outside temperatures or long
daily drives we recommend that you have the electrolyte level .,,_

_________________________________________________ F_ u_ s_ e_s _ a_n _d_ b_ u
_ lb_ s _ __,_
-
No . II Equipm ent
8 Engine control, auxiliary water pump
9
10 C
limate control front /rear, dash panel buttons
Suspension level control system
(Adaptive Air Suspension)
11 Light and rain sensor
1 2 Display -/control unit
13 Roof electronics control unit
CD/DVD d rive
15 Energy managemen t
16 Vacant
17 Radiator fan e lectronics
18 Airbag front passenger recognition
(weight sensor)
19 Vacant
20 Heated/ventilated seats
21 Engine control module
22 Vacant
23 Parking brake (switch)
24 Vehicle electrical syste m
25
26
27
Automatic transmission Air condi tioning water valves wate r pump,
rea r climate control
Sunroof
28 Engine control module
29 Fuel injectors
30 Ignition coils
Amps
10
5
1 0
5
5
10
5
5
5
5
5
5
5
1 0
15
10
20
5
1 5
30
-
No . Equipm ent
31 Fuel pump , right/fue l pump e lectronics
32 Automatic transmission
33
34
Right rear footwe ll heater
Heated/ventila ted seats, rear
35 Heated/ventilated seats, front
36 Cigarette lighter, front
37 Cigarette lighter, rear/socket, rear
38 Auxil iary cooler fan
39 Door contro l unit, front right
40 Brake booster
41 Door contro l unit, rear right
42 Vacant
43 Headlight washer system
44 A ir co nditioning heater fan
Amps
20/40
5
25
20
20
20
20/25 20
7.5
1 5
7.5
30
30 •
Fuse Location , Luggage Compartment left
0
Fig . 2 95 Fuse pan el
l a you t _.
Vehicle care Do-it-yourself service irechnical data

lffll....__E_ m_ e_r -=g :....e_ n
_ c-=y _ s_ i_t _u _a _t_ i_o _n_ s _______________________________________________ _
-Read and hee d WARNI NG =:> & .
Fig. 305 Re ar lifting
point
Ac tivate t he vehicle jackin g mode if a pp licable
=:> p age 188 .
-Loc ate lift ing po in ts=:> page 369 , fig. 3 04 =:> fig. 3 05.
Ad just lift in g a rms of works hop hoi st or floor jack t o
match ve hicle li ftin g points.
Ins ert a ru b be r pad betwe en the floor jack/work shop
h o ist and t he li ftin g poin ts.
The vehicle jacki ng m ode mus t be ac tiva ted so that the au tomatic
adjustment of the Adaptive Air Suspension does not make it more
d ifficu lt to ra ise the vehic le w ith the (floor
jac k) => page 188 .
If you must lift your vehicle with a floor jack to work underneath , be
sure the vehicle is safely supported on stands intended for this
purpo se.
Front lifting point
T he lif ti ng po int is locat ed o n th e floor pan re inforc ement abou t at
the same level as the jack mounting
point => page 3 69, fig. 304. Do
not lift the vehicle at the vertical sill reinforcement. Rear lifting point
Th
e lif tin g po int is loca ted o n the vertical re info rce ment of the l ower
s ill for t he o n-board
jack=> fig . 305.
Lifting with vehicle jack
Refer to => page 354.
& WARNING
• To reduce the risk of serious injury and vehicle damage.
-Always lift the vehicle only at the special workshop hoist and
floor ja ck lift points illustrated
=> page 369 , fig. 304 and
=> fig . 305.
- Failure to lift the vehicle at these points could cause the
vehicle to tilt or fall from a lift if there is a change in vehicle
weight distribution and balance. This might happen , for
example , when heavy components such as the engine block or
transmission are removed .
• When removing heavy components like these, anchor vehicle
to hoist or add corresponding weights to maintain the center of gravity. Otherwise , the vehicle might tilt or slip off the hoist,
c ausing serious personal injury .
0 Note
• Be awar e of the following points before lifting the vehicle :
-The vehicle should never be lifted or jacked up from under­
neath the engine oil pan , the transmission housing , the front or
rear axle or the body side members . This could lead to serious
damage .
-To avoid damage to the underbody or chassis frame , a rubber
pad must be inserted between the floor jack and the lift point s.
- Before driving over a workshop hoist, check that the vehicle
weight does not exceed the permissible lifting capacity of the
hoid . ~

___ D_ a_ ta ______________________________________________________ _
Data
Applies to vehicles: with 8 -cylinder engine and all wheel drive
350 hp, a-cylinder engine, with all wheel drive
Engin e da ta
Max imum output SAE net
Maximum torque SAE net
No . of cy linders
Disp lacement
Stroke
Bore
Compress ion ratio
Fuel
Dimension s (appro x.)
Length (with licence plate bracket)
Width (across mirro rs)
He ight (un loaded)
T urning circle diameter (curb to curb)
Capa citie s (a pprox.)
Fuel t ank
-Total capacity
- Reserve (of total capacity)
Wind shi eld and h eadlight wa sh er fluid contain er
Engine oil
with filter change hp@ rpm
lb -ft@ rpm
CID (cm
3 )
in (mm)
in (mm)
350@ 6800
325 @3500
8 cylinder
254 (4163)
3.65 (92.8)
3.33 (84.5) 12.5: 1
Premium unleaded (91 AKII Recommended fo r maximum engine per formance . Fur ­
ther
details ::::;, page 307, "Gasoline"
in (mm)
in (mm)
in (mm)
ft. (ml
A8 = 199.3 (5062)
AB = 79 .8 (2028)
A8 = 56.9 ( 1444)
AB = 41.0 (12.5)
gal (liters)
gal (liters)
quarts (liters)
quarts (liters)
A8 L = 204 .4 (5 192)
AB L = 79 .8 (2028)
A8 L = 57.3 (1455)
A8L =41.7(12.7)
23.8 (90.0)
2.4 (9 .0)
5.1 (4.8)
9.3
(8.8) •

_____________________________________________________ D_a_ t_ a __ llJIII
App lies to veh ic les: w it h 12-cy linder eng ine and a ll whee l dr ive, lon g wheel base (LW B)
450 hp, 12-cylinder engine, with all wheel drive, long wheel base
En gin e data
Maximum output SAE net
Maximum torque SAE net
No. of cy linders
Displacement
Stroke Bore
Compression ratio Fuel
Dim ension s (appro x.)
Lengt h (wi th lice nce p late bracket)
Width (ac ross mirrors)
Height (unloaded)
Turning circle diameter (curb to cu rb)
Ca pac itie s (a pprox.>
Fuel tank
-Total capac ity
-Reserve (of total capacity)
Windshield and headlight washer fluid container
Engine oil
with fi lte r change hp@rpm
lb-ft@ rpm
CID (cm
3l
in (mm)
in (mm) 450@ 6200
428 @ 4000-4700
12 cy linder
366 (5998)
3 .55 (90 .2)
3 .3 1 (84 .0)
1 1.0 : 1
Premium unleaded (91 AKI! Recommended for maximum engine performance . Fur ­
t her
de tails => page 301, "Gasoline"
i n ( mm)
in (mm)
in (mm)
ft. (ml 20
4.4 (5192)
79.8 (2028)
57 .3 (1455)
41.7 (12 .7)
gal (liters)
gal (liters)
quarts (liters)
quarts (liters ) 2
3 .8 (90 .0)
2 .4 (9 .0)
5.1 ( 4.8)
13 .2 (1 2 .5)
•
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

_______________________________________________ C
_ o_ n
_ s_u _ m_ e_ r_l_ n _f_o _ r_ m_ a_ t
_ i
_ o _ n
__ l'III
re liabi lity . For detailed vehicle maintenance consult your Warranty &
Maintenance book le t.
Und er diff icult oper ating conditi ons, for example at extreme ly low
outside temperatures, in very dusty regions, when towing a trailer
very frequently, etc ., some serv ice work shou ld be performed
between the intervals specified. This applies particu lar ly to :
• oil changes, and
• cleaning or replacing the air filter.
c£> For the sake of the environment
By regularly maintaining your vehicle, you help make sure that emis ­
sion s tandards are maintained, thus minimizing adverse e ffec ts on
the environment. •
Important considerations for you and your
vehicle
The increasing use of electronics, sophisticated fue l injection and
emission contro l systems, and the genera lly increasing techn ica l
complexity of today's automobiles, have steadily reduced the scope
of maintenance and repairs which can be carr ied out by veh ic le
owners.
Also , safet y and env ironmental concerns p lace very strict
l im its on the nature of repairs a nd adjustmen ts t o engine and trans ­
mission parts which an owner can perform.
Maintenance, adjustments and repairs usually require special tools,
testing devices and other equipment availab le to spec ia lly trained
workshop personne l in order to assure proper performance, reli ­
abil ity and sa fety of the vehicle a nd its many systems.
I mproper maintenance, adjustments and repairs can impair the
operat ion a nd rel iabil ity of your vehicle and even vo id your vehicle
warranty. Therefore , proof of servicing in accordance with the main ­
t enance sched ule may be a cond ition fo r uphold ing a p ossi ble
warranty claim made within the warranty period.
Controls and equip­ ment Safety first Vehicle operation
Above all, operational safety can be adverse
ly affected, creating
unnecessary risks for you a nd yo ur passengers .
If in doubt about any servicing, have it done by your authorized Audi
dea ler or any other properly equipped and qualified workshop. We
strongly urge you to give your authorized Audi dea ler the opportu ­
nity to perform all scheduled maintenance and necessary repairs.
Your dealer has the fac ilities, origina l parts and trained spec ialists
to keep your vehic le running proper ly.
P e rforming limited maintenan ce yourself
The following pages describe a limited number of procedures which
ca n be performed on your vehicle with ord inary tools, should the
need arise and trained personne l be unavailab le. Before performing
any of these procedures, a lways t hor oughly read all o f the app li­
cable text and carefu lly fo llow the instruct ions given. Always rigor ­
ously observe t he
WARNINGS provided .
Before you che ck anything in the engine comp artment , alwa ys re ad
and heed all
WARNING S=> & and => & in "Working in the engine
compartment" on
page 307.
& WARNING
• Serious personal injury may occur a s a result of imprope rly
performed maintenance , adju stments or repair s.
• Always be e xtremely careful when working on the vehi cle .
Always follow commonly accepted safety practice s and general
c ommon sen se . Ne ver risk per sonal injur y.
• Do not attempt any of the maintenance , checks or repairs
de scribed on the following pages if you are not fully familiar with
these or other pro cedures with re spe ct to the vehicle , or are uncer ­
tain how to pro ceed .
• Do not do any work without the proper tools and equipment.
Have the ne ce ssary work done by your authorized Audi dealer or
another properly equipped and qualified workshop .
~
Vehicle care Do-it-yourself service Technical data

___ C_ o_n_ s_ u_m _ e_ r_ ln_ f_o _r_m _ a_ t_ i_o _n ______________________________________________ _
&, WARNING (continued )
• The engine compartment of any motor vehicle is a potentially
hazardous area . Never reach into the area around or touch the
radiator fan . It is temperature controlled and can switch on
suddenly -even when the engine is off and the ignition key has
been removed . The radiator fan switches on automatically when
the coolant reaches a certain temperature and will continue to run until the coolant temperature drops .
• Always remove the ignition key before anyone gets under the
vehi cle .
• Always support your vehicle with safety stands if it is neces­
sary to work underneath the vehicle . The jack suppl ied with the
vehicle is not adequate for this purpose and could collapse causing serious personal injury .
• If you must work underneath the vehicle with the wheels on
the ground , always make sure the vehicle is on level ground , that
the wheels are always securely blocked and that the engine
cannot be started .
• Always make sure the transmission selector lever (automatic
transmission) is in
"P " (Park position ) and the park brake is firmly
applied.
W For the sake of the environment
• Cha ng ing the eng in e sett ings will adverse ly aff ect em iss ion
levels . This is detrimenta l to the environment and increases fuel
c o nsu mp tion .
• Always observe environmenta l regu lations when disposing of
o ld eng ine oil, u sed b ra ke flu id, d irty e ng in e coo la nt, spe nt batter ies
or worn out tires.
• Undeployed airba g modul es and pret ensioners might be classi ­
fied as Perchlorate Material -special handling may apply, see
www .dtsc.ca .gov/ haza rdouswast e/p erc hlor ate . W hen the vehicle or
parts of the restraint s ystem including airbag modules safety be lts
w it h p ret en sio ner s are scra p pe d, a ll ap pl icable l aw s and reg ula- tions must be observed
. Your authorized Audi dea ler is familiar with
th ese re q ui re me nts a nd we reco mmend th at you h ave your dea le r
perform this serv ice for you .•
Additional accessories,
modifications and parts replacement
Additional accessories and parts
replacement
Always consult an author ized Audi dealer before
pu rcha sing a ccess ories .
Your vehicle incorporates the latest safety design featu res ensuring
a high sta nd ard of ac tive a nd pass iv e sa fet y.
T his sa fety could be compromised by non -approved chang es to th e
veh ic le . Fo r th is reason, if pa rts have to be replaced, please o bse rve
the followi ng po ints wh en insta lling addi tio na l acc essor ies:
A pprove d Audi accesso ries and genuine A udi parts are avai lable
fr om autho rized Aud i d eale rs.
T hese deale rs also have the necessary fac ilities, tools and tra ined
spec ial is ts to ins tal l the part s and accesso rie s prope rly.
L1}. WARNING
Using the wrong spare parts or using non -approved accessories
can cause serious personal injury.
• Use only accessories expressly approved by Audi and genuine
Audi spare parts
• These parts and accessories have been specially designed to
be used on your vehicle .
• Never install accessories such as telephone cradles or
beverage holders on airbag covers or within the airbag deploy-

___ A_ l-=- p _ h_ a_ b_e _t_ ic _ a_l _in _ d_e_ x ____________________________________________ _
A
Accessories . . . . . . . . . . . . . . . . . . . . . . . . 382
Adaptive Air Suspension ....... .. .... 185
automatic mode .. .... .... .... ... 186
Description ... .... .... .......... 185
dynamic mode ................... 186
Jacking mode when changing a flat tire .
188
lift mode . . . . . . . . . . . . . . . . . . . . . . . . 186
Setting the driving modes .. .... ... 188
Sport Chassis Controls . . . . . . . . . . . . 187
standard mode ... .... .... ...... . 186
Trailer towing mode ... .... .... ... 189
Warning/indicator lights .. ... ... 20, 21
Adaptive Cruise Control .............. 139
Changing speed ...... .... ...... . 142
Driver information ............... 144
Drivingintraffic .. .... .... ...... . 140
Error messages . . . . . . . . . . . . . . . . . . 147
Open road . . . . . . . . . . . . . . . . . . . . . . 140
Override ........ ... .. ...... .... . 140
Request for driver to assume control 140
Save speed . . . . . . . . . . . . . . . . . . . . . . 141
Setting distance . . . . . . . . . . . . . . . . . 143
Setting time interval . ... .. .... .... 143
Settings . . . . . . . . . . . . . . . . . . . . . . . . 148
Specia l driving situations . ....... . 149
Status messages ................. 147
Switching on and off ... .. .... ... . 141
System limits ...... .... .... ... ... 149
T emporarily turning off ....... .... 142
warning/indicator lights ... .... .... 145 Adaptive
Light .......... .... .... .... . 72
defective ......................... 36
Adding Engine coolant ................... 316
Engine oil . .... .... .... ... .... ... 312
Windshield washer fluid .... .... ... 323
Additiona l accessories .......... ..... 382
Additives Engine oil ... .. ...... ....... ..... 312
Adjustable steering co lumn .. .... .... 128
Adjusting Front seats . . . . . . . . . . . . . . . . . . . . . . . 86
Instrument cluster i llumination ...... 15
Steering column ................. 128
Advanced Key ....................... 59
Driver's messages . . . . . . . . . . . . . . . . 133
Locking the vehicle .. ...... .... .... 60
START button ................... 131
Starting the engine ............... 131
STOP button . . . . . . . . . . . . . . . . . . . . . 132
Stopp ing the engine ......... ..... 132
Switching on the ignition .......... 131
Unlocking the vehicle . .......... ... 60
Advanced Parking System with rear view
camera
Adjusting the chimes -option 1 .... 180
Adjusting the chimes - option 2 .... 181
front and back with visual display and
r ear-view camera . . . . . . . . . . . . . . . 170
General information ... .... ....... 170
Not es on distance information ..... 179
Parking next to obstac les . . . . . . . . . . 178
Rear -view camera -parking mode 1 . 175 Rear-view
camera -parking mode 2 . 176
Rear-view camera (Rear View) ...... 173
Rear-view camera coverage area .... 174
Rear-view camera tips ............ 183
Specia l parking situations .. .... ... 178
Switching the rear-view camera on and
off .. .... .... ...... ... .. .... ... 182
switching the visua l display on and off ..
182
System error message ............ 183
Towing hitch ...... .... ...... .... 180
Air conditioning
See Cl imate controls .... ... .... ... 114
Airbag system .... .... .... ...... 218, 238
Advanced Airbag System ...... .... 222
Advanced Airbag System components ...
225
Care ............................ 232
Child restraints ................ .. 245
Children ... .... .... ... ........ .. 244
Components (front airbags) . ...... . 225
Dang er of fitting a child seat on the front
passenger seat .. ....... .. .... .. 220
Disposal . ...... ..... .. .... .... .. 232
Fron t airbags ...... .... .... .. 222, 223
How do the front airbags work? . ... 227
How many airbags does my vehicle have?
225
How the Advanced Airbag System compo -
nents work together ... .... ...... 226
Impor tant safety instructions on the knee
airbag system .................. 236
Impor tant things to know .. .... .... 218
Indicat or light ........ ........... 229