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22 8
Ch e ck ing and filling
- Always dispose of used engine oil proper -
ly. Do not dump it on garden soi l, wood-
ed areas, into open streams or down
sewage dra ins.
- Recycle used engine oil by taking it to a
used engine oil collection 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 pro-
tects the engine from freezing in the winter.
The cooling system is sealed and generally re-
qu ires little attention.
The cooling system has been filled at the fac-
tory with a permanent coolant which does not
need to be changed. The coolant consists of a
mixture of spec ially conditioned water and the
manufacturer's
glycol-based coolant addi-
tive G13 antifreeze with ant icorros ion addi-
tives (50% for USA models; 60% for Canadian
models). This mixture both assures the neces-
sary frost protection and protects metal com-
ponents in the engine's coo ling system from
corrosion and scaling . It also raises the boil-
ing point of the coolant.
Do not reduce the concentration of the coo l-
ant in the summer by adding plain water. The
propo rtion of coolant additive must be at
least 50 % but not more th an 60 % to ma in-
tain antifreeze protection and cooling efficien-
cy. If the coolant frost protect ion is too low,
the coo lant cou ld freeze and damage the veh i-
cle heating and eng ine cool ing system.
For year-round driving, antifreeze is added at
the facto ry for temperatures
down to:
- -31°F(-35°C)USA
- - 40 °F ( - 40 °C) Canada.
If you must add coo lant, use a m ixtu re of wa -
ter and coo lant addit ive. Mixing the coolant
additive with disti lled water is recommended .
A
WARNING
Before you check anything in the engine
compartment,
always read and heed all
WARNINGS~ &.
in Working in the engine
compartment on page 222 .
(D
Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli-
mate conditions. This is especia lly impor-
tant if you live in a reg ion where t he win-
t er is ext reme ly cold. If necessary, in-
crease the proportion of coo lant add it ive
to 60% .
- When ad ding coolant addi t ive to your
cooling sys t em, remembe r:
- We recommend us ing on ly coolant ad-
d itive G12++ or G13 (check the label)
for your vehicle . This coolant additive is
ava ilable at autho rized Audi dea le rs.
Other types of antifree ze ca n sign ifi-
ca ntly reduce corros io n protec t ion. The
res ult ing corrosion ca n cause a loss of
coolant and serious engine damage.
- Do not add any type of rad iator lea k seal-
ant to your vehicle 's engine coolant .
Adding radiator repair flu id may adverse-
ly affect the function and performance of
your cooling system and cou ld resu lt 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. 1 91
Engi ne compartment: cover on the coola nt
expansio n ta nk
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