2008 AUDI S8 fuel

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Driving and environment
The first 1,000 miles (1,500 km) and
afterwards
New engine
The engine needs to be run-in during the first 1,000 miles
(1,500 km).
For the first 600 miles (1,000 kilometers):
Do not use full throttle.
- Do not drive faster than 3/4 of the top speed marked on
the speedometer.
- Avoid high engine speeds .
From 600 to 1,000 miles (1,000 to 1,500
kilometers):
- Speeds can gradually be increased to the maximum
permissible road or engine speed.
During and after break-in period
-Do not rev the engine up to high speeds when it is cold.
This applies whether the transmission is in N (Neutral) or
1n gear.
After the break-in period
- Do not exceed maximum engine speed under any
circumstances.
- Upshift into the next higher gear
before reaching the red
area at the end of the tachometer
scale => page 12.
Controls and equip­
ment Safety first
Vehicle operation
During the first few hours of driving, the engine's internal friction is
higher than later when all the moving parts have been broken in.
How well this break-in process is done depends to a considerable
extent on the way the vehicle is driven during the first 1,000 miles
(1,500 kilometers).
0 Note
Extremely high engine speeds are automatically reduced. However,
these rpm limits are programmed for an engine well run-in, not a
new
engine.
~ For the sake of the environment
Do not drive with unnecessarily high engine speeds -upshifting
early saves fuel, reduces noise and protects the environment .•
New tires
If your vehicle is running on new tires, drive particularly
careful for the first 350 miles (500 kilometers) after fitting.
& WARNING
New tires tend to be slippery and must also be "broken-in". Be
sure to remember this during the first 350 miles (500 kilometers).
Brake
gently. Avoid following closely behind other vehicles or
other situations that might require sudden, hard braking.
•
Vehicle care Do-it-yourself service Technical data

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New brake pads
Remember that new brake pads do not have a full braking
effec t during the first 250 miles (400 kilometers) after they
are installed .
New brake pads have to be "burnished in" before they have optimal
grab =>& .
During the break -in period, you s hou ld avoid putting severe loads
on the brakes . Severe loads include, for examp le, sudden hard
braking, in particular at very high speeds or, for example, on moun ­
t ain passes.
& WARNING
N ew brake p ad s don 't h ave the be st stopping po wer and mu st be
"broken -in " during the initial 100 to 150 mile s (150 to 200 kil ome ­
t e rs) of norm al c ity dri ving . You can comp en sa te for thi s by
pr ess ing the brake ped al more firmly . Thi s al so appli es later when
ne w pad s a re in sta lled. •
Catalytic converter
It is very important tha t your emission control sys tem
(catalytic converter) is functioning properly to e nsure that
y o ur vehicle is running in an environmentally sound
manner.
-Always use lead-f ree gasoli ne :=> page 301, "Fuel supply".
-Never run the tank down a ll the way to empty.
-Never put too much motor o il in your engine :=> page 312,
"Adding eng ine oil 'l=;r111
•
-Never try to push -or tow -s ta rt yo ur vehic le.
T he catalytic converter is an efficient "clean -up" device built into the
exhaust system of the vehicle. The catalytic converter burns ma ny
of the po llutants in the exhaust gas before they are released into the
atmosphere.
The exclusive use o f un leaded fue l is critica lly important for the l ife
of the cata lytic converter and proper functioning of the engine.
& WARNING
• Do not park or operate th e veh icle in ar ea s where the hot
e x hau st sys tem m ay come in cont act w ith dr y grass, brush , fuel
s pill or other material which can cau se a fire .
• Do not appl y additi ona l u ndercoating or ru stpr oofing on or
near the exhau st manifol d, exhau st pipe s, ca tal ytic converter or
h ea t shield s. Du ring dri ving , the sub sta nce u sed f or under coating
c ould overhe at and cau se a fir e.
0 Note
• Be aware that just one tank filling with leaded fue l wi ll already
seriously degrade the performance of the catalyt ic converter.
• Do not exceed the correct engine oil
level => page 312 .
• Do not drive until the fuel tank becomes comp letely empty . The
engine cou ld misfire. Unburned fuel could also get into the exhaust
system and this could cause the catalytic converter to overheat .
• Do not turn off t he ignition wh ile the vehicle is moving.
• Do not continue to operate your vehicle under these conditions,
as otherwise fuel can reach the cata lyt ic converter . This cou ld result
in overheating of the converter, requiring its rep lacement .
• To assure eff ic ient operat ion of the Emiss ion Contro l System:
- Have your vehicle maintained properly and in accordance with
the service recommendations in your Warranty
& Maintenance
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- Lack of proper maintenance as wel l as improper use of the
vehic le will impair the func tion of the emission con tro l system
and cou ld lead to damage .
<£> For the sake of the envir onment
Even when the Emission Control System is operating properly, the
exhaust gas can have a su lfur -like exhaust gas smell under some
operating states . This depends on the sulfur content of the fuel
being used. Using a different b rand of fue l may help, or fil ling the
tank with lead-free super grade gasol ine. •
Avoid damaging the vehicle
When you are driving on poor roads, or over curbs, steep ramps,
etc., make certain that low- lying parts such as spoi lers and exhaust
system parts do not bottom out and get damaged.
T his is especial ly true for vehicles with low -s lung chassis (sports
chassis)* and ful ly loaded vehicles .•
Operate your vehicle economically
and minimize pollution
General
Y o ur personal style of driving will determine the economy
of your vehicle , as well as exhaust and noise levels.
Fuel economy, environmenta l impact, and wear on your engine,
brakes and t ires largely depend on three factors :
• your personal driving style
• operat ing cond it ions
• t echnica l limitations
Controls and equip­
ment Safety first Vehicle operation
I
f you anticipate what you need to do next and drive economica lly,
you can eas ily cut your fuel consumptio n by 10 -15 percent . This
section wil l give you some tips on how you can help the environ­
ment and your poc ketboo k.
[ i ] Tips
The consumption estimates as published by ENV IRO NME NTA L
PRO TECTION AGENCY (EPA) and Transport Canada may not corre ­
spond to your actua l consumption on the road, which wi ll vary
depe nding upon veh ic le load and speed, road and weather condi­
tions, trip length, etc. •
Drive smoothly and keep a lookout ahead
Vehicles use the most fuel when they ore accelerating .
-Avo id unnecessary accelerat ing a nd braking .
Vehicles use the most fue l when they are accelerating . If you antici ­
pate what is going to happen
ne xt, you wi ll need to brake less and,
thus, acce lerate less. Let the vehicle coast whenever possib le -for
examp le when you see that the next traffic light is red. •
Avoid full throttle
Driving at moderate speeds saves fuel and improves your
mileage.
- Try and keep we ll below your car 's max imum speed.
Acce lerating gently reduces fue l consumption, engine wear, and
does no t disturb the envir onment.
Fue l consumption, exhaust emissions and engine noise increase
dispropo rtionately at h ig h speeds . If yo u drive at approxi mate ly
three quarters of top speed, fuel consumpt ion wil l be reduced by
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Vehicle care Do-it-yourself service Technical data

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one half. Never drive faster than the posted speed limit and weather
co nditions permit. •
Reducing unnecessary idling
Even when your car is just idling it burns up fuel.
- Shut the eng ine off when you are not driving the vehicle .
- Do not warm up the vehicle by letting the engine run at
id le .
It makes sense to shut off the engine in traff ic jams, when waiting
for trains to pass at rai lroad crossings, or at traffic lights that have
long waits on red. Turning the engine off for just 30 -40 seconds
saves more fue l than is burned starting the engine again .
It takes a long time for the engine to warm up fu lly when it is
running at idle. However, wear and noxious em issions are espec ially
high when the engine is warming up . So you should drive away as
soon as you start the engine and avoid running at high rpms while
the engine is sti ll warming up.
0 Note
Do not leave engine idling unattended after starting . If warning
lights should come on to indicate improper operation, they would
go unheeded. Extended idling also produces heat, which could
result in overheating or other damage to the vehicle or other
property .•
Regular maintenance
A badly tuned engine unnecessarily wastes a lot of fuel.
- H ave your vehicle serviced at regular intervals .
By having your vehicle regularly serviced by an Audi dealer helps to
ensure t hat it runs properly and economical ly . The condit ion of your
vehic le not only affects its safety and abi lity to hold its va lue, it also
affects
fuel con sumpt ion .
C hec k your oil each time you fill your tan k.
The amount of oil used is related to engine load and speed.
I t is norma l for the oi l consumption of a new engine to reach its
lowest va lue after a certain mileage has been driven.
You must drive your vehicle about 3,000 miles (5,000 kilometers) before you can properly assess oil consumption .
T his also applies to fuel consump tion and engine output .
0 Note
• Have your vehicle maintained properly and in accordance with
t he service recommendat ions in your Warranty
& Maintenance
booklet. Lack of proper ma intenance as well as improper use of the
vehic le wi ll impair the function of the emission control system and
cou ld lead to damage.
• Do not alter or remove any component of the Emission Contro l
System unless approved by the manufacturer.
• Do not alte r or remove any device, such as heat sh ields,
switches, ignition wires, valves, which are designed to protect your
vehic le's Emission Control System and other important vehic le
components .•
Fewer short trips
Fuel consumption will always be relatively high on short
trips.
- Try to avoid driving short dista nces with a cold engine. ~

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T he engine and catalytic converter have to reach their optimal op er­
a ting t emp era tur e
to reduce fuel consumption and noxious emis ­
sions effective ly .
Just after starting, a cold engine in a mid -size car only achieves a
fue l economy of 6-8 m iles per gal lon (30-40 1/100 km). After about a
half a mi le, fue l economy climbs to 12 mpg (201/100 km). After about
2.5 m iles (4 km), the engine is at its proper operat ing temperature
and fuel economy has reached a normal level. So you can see that
you should avo id short tr ips whenever poss ib le .
The
out sid e te mperature is also critical in this regard . Your car
consumes more fuel in the winter than in the summer. •
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

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Operating instructions
M ax im um tra iler weig ht
A trailer for your vehicle is limited to a typ ical c lass 1 or class 2
trailer.
T ra ile r l oad d is tributi on
Be sure the load in the trailer is he ld securely in place to prevent it
from shifting forward, backward or s ideways .
Never a llow a pass enger to r ide in a trailer:::::, & in "Driving instruc­
t ions" .
Engin e coo lin g sys te m
Tow ing a trai ler makes the engine work harder. It is important that
the cooling system's performance is up to the additiona l load. Make
sure that the coo ling system has enough fluid .
Tire press ure
When towing a trailer, inflate the tires of your veh icle to t he co ld tire
pressure listed under "Full load" on the labe l located either on the
driver's side B -pil lar (visible when the door is open) or inside the fuel
filler flap . Inflate trailer tires to trai ler and tire manufacturers' spec­
ifications.
L ig ht s
The head light settings should be checked wit h the trai ler attached
before driving off. Check to make sure both vehicle and trai ler lights
are working properly .
Safe ty c ha in s
Be s ure trailer safe ty chains are properly connected from the trailer
to the hitch on the vehicle. Leave enough slack in the chains to
permit turning corners . When yo u insta ll safety chains, make sure
they will not drag on the road when you are driving.
T he chains should cross under the trailer tongue to prevent it from
dropping in case of separat ion from the hitch.
Controls and equip­
ment Safety first
Vehicle operation
0 Note
If you are go ing to tow a trai ler, you must activate the tra iler opera­
tion
mode :::::, page 189, "Towing a Trailer". •
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possib le handling of ve hicle and trailer,
p lease note t he following :
- Do not tow a loaded trailer when your car itself is not
loaded.
- Be especia lly careful whe n passing other vehic les .
- Observe speed limits .
- Do not drive at the maximum permiss ible speed .
- Always apply brakes early.
- Monitor t he temperature ga uge .
W eight d istr ibu tion
Towing a loaded trailer with an empty car results in a highly
unstable d istribution of weight. If this cannot be avoided, drive at
very low speeds only to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control. This means that
t he tow vehicle should be loaded to the extent possible and permis ­
sib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfer some cargo to the luggage
compartment of the tow vehicle whi le observing tongue load
requirements and vehicle loading considera tions .
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Vehicle care Do-it-yourself service Technical data

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Cleaning and protection
General information
Regular care preserves vehicle value.
Any automobile is exposed to industrial fumes, corrosive road salt,
muddy dog feet, etc . A well cared for Audi can look like new many
years a fter purchase. Regu lar a nd correc t ca re will contribu te to
maintaining the beauty and va lue of your Audi.
Furthermore, good care may be a condition for substantiating a
warr anty claim should corrosion d amage or paint defect s occur .
Your authorized Audi dealer has a variety of dedicated vehicle- care
product s
and can adv ise whic h ones to use fo r clea ning the exterior
and interior of your vehicle.
Whether you use prod ucts recom mended by Audi or o ther commer ­
cia lly availab le cleaning agents, please make sure you app ly them
correctly.
& WARNING
• Cleaning agents may be poi sonous . Keep them out of the reach
o f children .
• Heed all cau tion label s.
• Always read directions on the container before u sing any
p rodu ct. Follo w the di re ction s carefully .
• Most chemical cleaners are concentrated and have to be
diluted.
• Use spot removing fluids only in well ventilated area s.
• Do not use gasoline , kerosene , die sel fuel , n ail polish remo ver
or other vol atile fluids . They may be toxic , flammable or ha zardous
in other way s. Do n ot wash , w ax or dry the vehicle with the igni ­
tion on or the engine running.
& WARNING (continued )
• Do not clean the under sides of chassis , fenders , wheel cover s,
etc . without protecting your hands and arms. You may cut yourself
on sha rp -edged metal parts .
• Moisture and ice on brakes may impair braking effi ciency
=> page 270 , "Gener al info rm ation ". Test the brake s carefully each
time you wash the vehicle .
~ For the sake of the environment
Select only enviro nmen ta lly friend ly c leaning pr oducts . Leftover
clean ing products should not disposed of in the household waste. •
Care of exterior
Washing
Frequent washing protects the vehicle.
Th e best p rotection aga inst environmental influe nces is frequent
washing and waxing . How often this is required depends on:
• Ho w much the vehic le is used
• Where the vehic le is parked (garage, in the open under trees,
etc.)
• T he seasonal and weather conditions
• E nvironmenta l influences
T he longer bird droppings, insects, tree resin, road and industrial
gri me, ta r, soot, road salt and ot her mater ials rema in on the ve hicle
body, the more lasting their destruc tive effects will be . High temper­
atu res caused by exp osu re to in tense s un ligh t inte nsify the c orro -
s ive effect, particularly when hum idity is high as well .
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•
from fading . Slight color variations will develop in normal use and
are not an indication of material deterioration.
0 Note
• Never use chemical solvents (e.g. lighter fluid, turpentine),
waxes, shoe polish or similar products on Alcantara® surfaces.
• To avoid damage, have stubborn stains removed by a commer­
cial cleaning specialist.
• Do not use brushes, stiff sponges or similarly abrasive cleaning
aids. •
Safety belts
Only well-maintained safety belts work reliably when
needed.
- Keep belts clean.
- For cleaning, use a mild soap and water solution. Let
belts dry thoroughly and away from direct sunlight.
- Do not allow inertia reel safety belts to retract before
they are completely dry.
- Check the condition of your safety belts
regularly.
Heavily soiled safety belts may not retract properly.
& WARNING
Damaged safety belts can break in a crash.
• Anything that might damage your safety belts could mean that
you and your passengers would not be adequately protected in an
accident.
• Safety belt performance depends on correct installation. Never
remove belts from the vehicle to clean them.
&, WARNING (continued)
• Do not use chemical cleaning agents, bleach or dyes. They have
corrosive properties which weaken the webbing.
• When cleaning your safety belts, inspect them for damage. If
you discover damage, see your Audi dealer.
• Always read and heed all WARNINGS and other information
=> page 288. •
Engine compartment
Be especially careful when cleaning the engine compart­
ment.
Always switch off the ignition before cleaning the engine => &,.
Plenum panel
Remove leaves from the plenum panel in front of the windshield
under the engine hood. This prevents the water drain holes from
becoming blocked, and it prevents debris from entering the vehicle
interior through the heating and ventilation ducts.
Corrosion protection
The engine compartment and transmission have been corrosion­
protected at the factory.
Good anti-corrosion treatment is very important, particularly in the
winter. If the vehicle is frequently driven on salt treated roads, the
entire engine compartment and plenum panel should be thor­
oughly cleaned at the end of winter and retreated to prevent salt
damage. At the same time, the underside of the vehicle should be
washed as well.
If the engine compartment is cleaned at any time with grease
removing solutions
11 , or if you have the engine washed, the anti­
corrosion treatment is almost always removed as well. It is therefore .,_
11 Use only the correct cleaning solut ions. Never use gasoline or diesel fuel.
Vehicle care