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Che ck ing and Fill in g
areas, into open streams or down sewage
drains.
- Recycle used engine oil by taking it to a used
engine oil collection facility in your area, or
contact a service station.
Cooling
system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro -
tects the engine from freezing in the winter .
The cooling syst em is sealed and generally re-
quires little attention .
The cooling system has been filled at the facto ry
with a permanent coolant which does not need to
be changed . The coolant consists of a mixture of
specially condit ioned water and the manufactur -
er's glycol-based coolant addit ive Gl3 ant ifreeze
with ant icorrosion add itives (50% for USA mod-
els· 60% for Canadian mode ls). This mixtu re both
'
assures the necessary frost protection and pro-
t ects meta l components in t he engine's cooling
system from corrosion and scaling. It also raises
the boiling point of the coolant.
Do not reduce t he concentr ation of the coolant in
the summer by adding plain water.
The propor-
tion of coolant additive must be at least 50 %
but not more than 60 %
to maintain antifreeze
protection and cooling efficiency. If the coolant
frost protection is too low, the coolant could
freeze and damage the vehicle heati ng and en-
gine cooling system .
For year-round driving, antifreeze is added at the
factory for tempera t ures down to:
- - 3 1 °F ( - 35°C)USA
- - 4 0 °F ( - 4 0 °C) Canada.
If you must add coolant, use a mixture of wate r
and coolant add it ive. Mi x ing the coolant additive
with distilled wate r is recommended.
_&
WARNING
Before you check anyt hing in t he engine com-
par t ment, always read and heed all WARN-
224
INGS ~ &. in Working in the engine compart-
ment on page 218.
(D
Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in your
vehicle is sufficient to meet the climate con-
ditions. This is espec ially important if you
live in a region where the winter is extreme-
ly cold. If necessary, increase the proportion
of coolan t addit ive to 60% .
- Whe n adding coolant additive to your cool-
ing system, remember:
- We recommend using only coolant addi-
tive Gl2++ or Gl3 (check t he label) for
your vehicle. This coolant additive is avail-
ab le at aut horized Audi dea lers. Othe r
types of ant ifreeze can significant ly re-
duce corrosion protection. The resulting
corrosion can cause a loss of coolant and
serious engine damage .
- Do not add any type of rad iator leak sealant
to your vehicle's engine coolant. Adding ra-
diator repa ir fluid may adverse ly affect the
funct ion and perfo rmance of your cooling
system and could result in damage not cov-
ered by your New Vehicle Li m ited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with a
quick glance.
Fig. 1 91
Engine compar tm ent : cover on t he coo la nt expa n-
sion tan k
Before you check anyth ing in the eng ine compart-
ment ,
always read and heed all WARNINGS
~
A
in Working in the engine compartmen t on
page 218.
..,.
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