fuel AUDI S8 2010 Owner's Guide

Unlocking the fuel filler flap by hand
You can open the fuel filler flap by hand if the power
locking system should fail.
Fig . 237 Luggage
compartment: Right·
side storage area
Fig. 238 luggage
compartment: Erner·
gency opening of fuel
filler flap
-Rotate the two pins @to the vertical position to open the
storage area.=:> fig. 237 .
- Unclip the loop® and move it to position©=:> fig. 238.
- Pull the loop down to position © to unlock the fuel filler
flap. •
Vehicle OP-eration
Fuel supply and filling your fuel tank
Vehicle care Do-it-yourselt service iTechnical data

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Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced.
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage=:> &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area=>& .
& WARNING
To help avoid injury, before you check anything under the hood:
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake.
Safety first
& WARNING (continued)
• Move selector lever to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment.
• Never spill fluids on hot engine components. They can cause a
fire. • Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm. The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary:
- Always disconnect the battery.
- Never smoke or work near heaters or open flames. Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine is
running or being started, never touch:
-Ignition cables
- Other components of the high voltage electronic ignition
system.
• If you must perform a check or repair with the engine running:
- First, fully apply the parking brake, move selector lever to
"P" (Park). .,
Vehicle care Technical data

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the form of Serv ice or Repair O rde rs that all scheduled ma inte nance
w as perfo rm ed in a t im ely mann er.•
Engine oil consumption
Th e e ngin e in your v ehi cle dep ends on an ad equate
amount of oil to lubricate and cool a ll of its movin g parts.
In order to p rovide e ffect ive lubric ation and cooling of inter na l
eng ine components, all internal combust ion eng ines consume a
c ert ain a mo unt o f oil. Oil co nsump tion va ries from e ngine to eng ine
and may change sign ifican tly over the li fe of the engine . Typically,
eng ines w ith a sp ecifie d brea k-in period (s ee =>
page 261) co nsum e
more o il dur ing the break -in period t han they cons ume a fter oil
cons umption has stabilize d.
Under norm al cond itions, th e ra t e of oil con su mp tio n depe nds on t he
quality and v iscosi ty of the oil, the RPM ( revolutions pe r minute) at
w hich the engi ne i s op erate d, the ambie nt te m pe ratu re and r oad
conditions. Further factors are the amount of oi l di lution from water
co ndens ation or f uel re sidue and th e oxid ation level of the oil. As any
eng ine is s ubject to wear as mileage builds up, the oil consumption
may increase over time until replacemen t of wo rn components may
become necessa ry .
With all these varia bles comin g into play, no stan dar d rate of oil
co nsum ption can be establis hed o r spe cified. Th ere is no alte rnative
to regular and frequent chec kin g of the o il level, see
Note .
If the yellow e ngine oil leve l w arning symbol in the ins trumen t
cl uster · .. lights up, yo u should chec k the o il lev el as soon as possible
with the oil dipstick=> page 293 . Top off the oil at yo ur earliest
conveni ence=>
pag e 294 .
& WARNING
Before you check anything in the engine compartment , always
read and heed all WARNINGS=>
& in "Working in the engine
compartment " on
page 289.
Safety first
0 Note
Driv ing with an in sufficie nt o il level is like ly to c ause severe d amage
to the engine .
[ i ] Tips
• The oil pressure warn ing display 'e.::1; is not an indicator of the oil
level. Do not rely on it . Instead, check the oil level in your engine at
regular intervals, preferably each time you refuel, and always
before going on a long trip .
• If you have the impression your eng ine consumes excessive
am ounts of o il, we recom mend that you cons ult your Audi dea le r to
have the cause of your concern properly d iagnosed. Keep i n m ind that
t he accurate meas urement of oil co nsum ption re quires great care
and may take some t ime. Your Audi dealer has instruct io ns about how
t o meas ure o il cons umption a ccu ra tely .•
Checking the engine oil Level
Vehicle care
Fig . 24 3 Illustration
o f principle 1 : M arker s
on oil dipstick ...
Technical data

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Fig. 244 Illustra tion
of principle 2: Markers
on oil dipstick
Before you check anything in the engine compartment,
always read and heed all WARNINGS => & in "Working in
the engine compartment" on
page 289.
Determining oil level
-Park your vehicle so that it is horizontally level.
- While at operating state temperature, briefly let the
engine run at idle and then shut it off.
- Wait approx . two minutes.
- Pull out the oil dipstick . Wipe off the oil dipstick with a
clean cloth, and slide it back in as far as it will go.
- Pull it back out and read off the oil level =>
page 293,
fig. 243 or=> fig . 244. Top off the engine oil, if applicable
=> page 294 .
Oil level within range @
-Do not add oil.
Oil level within range@
-You con add oil. Afterwords, the oil level should be within
range @.
Oil level within range©
You must add oil. Afterwards, the oil level should be
within range @.
The oil level needs to be checked at regular intervals. The best times
to do this are whenever you refuel and prior to long trips.
Depending on the way the vehicle is driven and the operating condi­
tions, oil consumpt ion can be up to 1 quart per 1.200 miles
(l liter
per 2 .000 km) . Consumpt ion may be higher with in the first 3.000
miles (5.000 km). •
Adding engine oil~
Fig. 245 Oil filler cap
location: 4.2 L 8-
cyllnder
Fig . 246 Oil filler cap
lo cat ion : 6.0 L 12 -
cyllnder .,_

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Occ up ant loading and distribution for vehi cle normal load for various d esignated seating capacit ies
Designated seating capacity, num- Vehicle normal load , number of Occupant distribution in a nor­
mally loaded vehicle
ber of occupants occupants
4
5
Cold tire inflation pressure
2
3
2 in front
2 in front, 1 in back seat
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 252 Ti re pre ssure
l a bel : lo cate d eit he r o n
driver 's s ide B-pilla r or
in sid e t he fue l fill er
flap
TVIE' I IU COl.D 'nRI! MCUUM
PNIU DIMCNIIONII PMIIION Dtl "*lit A f:11101>
....
·-.. OIIICOUM
- KPA,. PSI
- KPA,. PSI
- KPA,. PSI
Fig. 2 53 Tire pre ssure
lab el
Ma inta in ing p roper tire pressure is one of the most important th ings
you can do to he lp avoid sudden tire fa ilure. Underinflated tires are a
ma jo r ca use of sudden t ire failure. Keep ing t ires a t the right pressu re
is a lso important for safe and responsive vehicle handling, tract ion,
bra king and loa d ca rry ing .
Tire pre ssures are particularly important
when the vehicle is be ing dr iven at higher speeds, and then espe­
cially when he avily loaded even within the permi ssible load·
carr ying capacities approved for your veh icle.
Th e recommended tire pressures for your Audi depend on the kind of
tires on your vehicle and the number of passengers and/or amount of luggage you will be transporting.
O n USA veh icles, the tire pressure label is lo cated on the drive r's side
8-pillar. On Canada vehicles, the t ire pressure label is located either
•
T ir e pressure ge nera lly refers to the amount of air in a t ire that it
needs it to do its job and safely carry the combined load of the entire
veh icle and i ts conten ts. Tir e pressure is measured in kilopascals
(kPa), the international measur ing unit and in pounds per square inch
(PSI) . Tire press ure is based in part on the veh icle 's design and load
limit -the greatest amount of weight that the vehicle can carry safe ly
and the t ire size . The proper tire pressure is frequently referred to as
the "recommended cold t ire inflation pressure." Air in the tires
expands when the ti re hea ts up because of i nterna l fr iction when it
flexes in use. The ti re p ressu re is highe r when the t ire has wa rmed up
than when it is "cold ." It is the inflation pressure in a "co ld" tire that
co unts . Therefo re, you should never let air out of a warm tire to
match "cold tire inflation pressure" recommendations . The t ires
would then be under inflated and could fail suddenly.
on the driver's side 8-pillar o r inside the fuel f iller flap. The ti re pres- ...

Tires and wheels Ill
----------------
sure label lists the recommended cold tire inflation pressures for the
vehicle at its maximum capacity weight and tires that were on your
vehicle at the time it was manufactured.
If you wish to improve comfort when operating the vehicle at
normal load (up to 3 occupants), you can adjust tire pressures to
those specified for normal vehicle load. Before operating the
vehicle at maximum load, you must increase the tire pressures to
those specified for maximum vehicle load~& .
Bear in mind that the tire pressure monitoring system* can only
mon itor the tire pressures you have stored . The system does not
recognize the load condition of your vehicle.
Th e effectiveness of the tire pressure monitoring system* will be
impaired if you store normal load pressures but then operate the
vehicle at its maximum load~.&, . See the
illustration
~ page 310, fig. 2 52 for the locat ion of the label
either on dr iver's side B-pillar or inside the fuel filler flap (color of the
actual label and exact location on the vehicle will vary slightly) .
Note that the following tab le is accurate at the time of going to press
and is subject to change. In the event of discrepancies , the tire pres­
sure label (On USA vehicles, the tire pressure label is located on the
dr ive r's side B -pillar . On Canada veh icles, the tire pressure label is
located either on the dr iver's s ide B-pillar or inside the fue l f ill er flap)
always takes precedence.
The table below lists the recommended cold t ire inflation pressures
for the Audi model covered by your Owner's Literature at the vehicle's
capacity weight and the tire sizes insta lled on the respective models
as original equipment, or as a factory option .
Engine Tire designation Tire pressure front Tire pressure rear
(displace- normal load full load normal load
full load
ment in conditiona> condition conditiona> condition
liter)
PSI kPA PSI kPA
a -cylinder 255/45 Rla 99H All Season
33 230 36 250 30 210 35 240
4.2
255/40 Rl9 l0OV XL All Season 36 250 39 270 33 38 260
255/40 Rl9 l00Y XL High Performance 33 230 36 250 30 210 35 240
265/35 R20 99V XL High Performance 35 240 38 260 32 220 36 250
275/35 R20 102V XL High Performance 38 260 41 280 35 240 44 300
a-cylinder 255/45 Rla 99H All Season 33 230 36 30 210 35 240
4.2 L
255/40 Rl9 l00V XL All Season 36 250 39 270 33 230 38 260
255/40 R19 l00Y XL High Performance 33 230 36 250 30 35 240
275/35 R20 102V XL High Performance 38 260 41 280 35 240 44 300
Safety first Vehicle care Technical data