2015 AUDI A6 fuel additives

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-Blend must contain not more than 15%
MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform
espec ially we ll for winter or summer driving.
During seasonal change-over, we suggest that
you fill up at busy gas stat ions where the sea­
sonal adjustment is more likely to be made in
time .
(D Note
-Methanol fuels which do not meet these
requirements may cause corrosion and
damage to plastic and rubber compo­
nents in the fuel system .
- Do not use fue ls that fail to meet the
specified criter ia in this chapter.
- If you are unable to determine whether
or not a particular fue l blend meets the
specifications, ask your service station or
its fuel supp lier.
- 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 responsibility 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 prob­ l ems 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 manufac­
turers 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 supply and filling your fuel tank 215
fuel systems clean, they are not equally effec ­
tive .
A udi recommends using TOP TIER Detergent
Gasoline. For more info rmation on TOP TIER
Detergent Gasoline, please go to the official
website (www.toptiergas.com).
After an extended period of using inadeq uate
fuels, carbon deposit build-ups can rob your
engine of peak performance.
Q) Note
Damage or malfunction due to poor fue l
quality is not covered by the Aud i New Ve­
hicle Limited Warranty.
Diesel fuel
Applies to veh icles: w ith diese l eng ine
Always use ULSD (Ultra Low Sulfur Diesel)
No. 2. The ULS D No. 2 meets the ASTM D975.
D iesel fuel w ith concentrations of biodiese l
highe r than 5 % such as Bll, B2O or BlOO are
strictly prohib ited.
Serv ice stat ion fuel pumps are labeled with
the correct fuel informat ion for easy recogn i­
t ion by the user. If the diesel fuel pump is not
labeled ask the station operator what fuel is
being dispensed before filling up your vehicle.
ULSD No. 2 may not be available outside the
USA and Canada. Be sure to check before trav­
eling to other countries.
ULSD No. 2 can become thicker in very cold
temperatures, and this can impair the en­ gine's start ing and running. Depending on the
season, gas stat ions provide ULSD No. 2 that
flows better in cold temperatures so that you
can continue operating your vehicle as usua l.
(D Note
-Your vehicle's diesel engine was de­
signed soley for use with ULSD No. 2.
Th erefore, never use gasoline, heating
oil, other f uels or flow improvers . These
contain substances that wi ll severely
damage the fuel system and the engine. .,.
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220 Fuel supply and filling your fuel tank
This message appears if the system detects it
was filled incorrect ly. Drive immediate ly to
the nearest qualified workshop to have the malfunction repaired. Otherwise you will not
be able to start the engine again once you
stop it.
Filling AdBlue
App lies to vehicles: with diesel eng in e
A special refill bo ttle must be used to fill the
AdBlue.
Fig. 184 Rig ht rear vehicle si de: removing the Ad Blue
cap
Fig. 185 Ad8lue filler tub e: inse rting the refi ll bott le
The Ad Blue fi ller tube is located near the die­
sel filler tube. Always add 1.5 gallons (5 . 7 lit­
ers) of AdBlue (three bottles). This is the mini­
mum amount required to ensure the system
detects the refilling and to start the engine.
The Ad Blue tank capacity is approximately
4 .5 gal lons (17 liters).
Opening the filler tube and adding
AdBlue
Requirement: The request to add Ad Blue must
appear in the instrument cluster display.
• Switch the ignition off.
• Open the tank cover
c:;,poge 216.
• Turn the cap counterclockwise with the lug
wrench from the vehicle too l kit to remove it
C::,fig. 184.
• Remove the cap from the refill bottle.
• Position the refill bottle on the filler tube
and turn the bottle clockwise until it stops
turning
(D ~ fig. 185 .
• Press lightly against the bottom of the bot­
tle @to empty it . Continue pressing the
bottom of the bottle until it is empty or un­
til fluid stops flowing into the tank.
• Turn the bottle to the left without pressing
on the bottom.
Closing the filler tube
• Turn the cap clockwise on the filler tube
w ith the lug wrench until you hear it tighten
completely .
• Close the tank cover .
After filling
The vehicle must be driven. The system may
take up to two minutes to detect that the
AdBlue has been filled.
• If there was no Ad Blue left in the tank and a
range of
O mi (0 km ) was displayed in the
ins trument cluster, switch the ign ition on
for about 15 seconds before start ing the en­
gine.
_& WARNING
-Ad Blue can irritate the skin, eyes and res­
piratory system. If there is contact with
the fluid, flush immediately with plenty of
water. Consult a phys ician if necessary.
(D Note
-Only use Ad Blu e that conforms to the
standard ISO 22241-1. Do not mix any
additives with the AdBlue and do not di­
lute it with water.
- Do not add Ad Blue to the diese l tank or
add diese l fuel to the Ad Blue tank. Mix­
ing can lead to damage to the engine
and the AdBlue tank system . The Limited
New Vehicle Warranty does not cover
such damage.

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Starting with jumper cables . ... .. .. . 283
Stopping ... ..... ..... ... ... ... .... 75
E ng ine compartment ....... .. .. .. .. . 224
C losing the hood ......... .. .. .. .. . 223
Opening the hood ........ .. .. .. .. . 222
Safety instructions ..... ... .. .. .. .. . 222
Working in the engine compartment .. 222
E ng ine coolant ............ .... .. .. . 228
Adding coolant ........... .. .. .. ... 229
Chec king the eng ine coolan t leve l .. .. . 228
Expansion ta nk . ....... ... .. .. .. ... 228
M alfunct ion symbo l .... ... .. .. .. .. .. 1 6
Radiator fan . ..... .... ... .. .. .. ... 230
Temperature ga uge ....... .. .. .. .. .. 11
E ng ine oi l ... ............. .... .. ... 224
Adding .... .... .. .... ... .. .. .. ... 226
Addit ives ... ... .. ..... ... .. .. .. ... 226
Changing .. .... .. .... ... .. .. .. ... 227
Checking the eng ine o il level .. .. .. .. . 226
Indications and cond it ions requ iring ex-
tra check ing .. ... .. ... ... .. .. .. ... 226
Indicator light . . . . . . . . . . . . . . . . . . . . . 18
O il consumption ............. .... .. 225
Pressu re malfunct ion ...... .. .. .. .. .. 17
Recommended oil check in tervals .. .. . 226
Sensor defe ctive . . . . . . . . . . . . . . . . . . . . 22
Specification and viscos ity . ... .. .. .. . 224
E ng ine sound .............. ... ... .. 100
Eng ine speed limitat ion ..... .. .. .. .. .. 21
E ng ine start-stop mode
refer to Star t-Stop-System ... .. .. .. .. 81
E ng ine start system (indicator lights) .. .. 18
Environment Break- in period ........... .... .. ... 200
Catalytic converter ........ .. .. .. .. . 201
D iese l particu late filter .... .. .. .. .. . 202
Disposing of your vehicle battery ..... 235
Driving at high speeds ........ .... .. 203
Dr iving to m inimi ze pollu tion and no ise 202
Fu el ... .. .. .... ............. .. .. . 216
Fu el economy ... .. .... ... .. .. .... . 202
L eaks under your vehicle ... .. .. .. .. . 222
L etting the ve hicle stand and warm up . 203
Proper disposal of drained brake fluid . 231
Prope r disposal of drained engine coo l-
ant . .. ... . .... ............. .. .. . 229
Proper disposal of dra ined engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 226, 227
Index 301
Recycling used engine oil ..... ... .. .. 226
Unl eaded fuel .. .. .. . ... ...... ... .. 214
What shou ld I do with an o ld battery? . 235
E vent Data Recorde r (ED R) ........ .. .. 192
Exhaust tail pipes Cleaning .. .. .. .. .. ... ....... ..... 210
Expansion tank .. .. .. . ... ...... ... .. 228
E xte rior lighting . .. ................. . 43
Exterior m irrors
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . SO
Dimm ing .. .. .. .. .. . .. .... .... .. .. . 51
Heating ......... .. ..... ........... SO
Exterior temperature display ...... .. .. . 24
F
Fastening
Booster seats .. .. .. ........... .... 180
Convertib le child safety seats .... .. .. 178
Infant seats . . . . . . . . . . . . . . . . . . . . . . 177
Floor mats . ... .... .. . .. .. ..... ... .. 131
Foot peda ls .... ... .. ..... .......... 131
For the sake of the environment
Ga soline fumes and the env ironme nt .. 216
Reduc ing engine noise by early upshift-
ing .......... ... .. ................ 11
Refueling . .. .. .... .......... ..... 216
Savi ng f uel by early ups hifting ... .. .. . 11
Fo ur- zone automatic climate control . .. . 70
Front airbags Description . ... .... . ... ...... ... .. 149
How they work ...... .. .. ..... ... .. 155
Fron tal coll is io ns and the laws of p hysics 13 7
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 52
Adjusting ... .. .. .. . .. .... .... .. .. 128
Child restraints i n the front seat ...... 147
Fuel Additives .. .. .. .. .. . .............. 214
B lended gasoline ..... ............. 214
Current consumption ... .... .... .. .. . 25
E conomy messages (effic iency p rogram) 26
Fuel fi ller flap emergency re lease . .... 218
F uel fi ller nec k ... ............. .... 216
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline .. .. .. .. ... ............ .. 214
Gasoline additives . .. .. .. ..... ... .. 215
Low fue l level symbol . . . . . . . . . . . . . . . 22
Octane rat ing .. .. .... ......... .. .. 214
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