Checking and Filling
@ For the sake of the environment
- Before changing your oil, first make sure
you know where you can properly dispose of
the used oil.
- Always dispose of used engine oil properly.
Do not dump it on garden soil, wooded
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 system is sealed and generally re-
quires little attention .
The cooling system has been filled at the factory
with a permanent coolant which does not need to
be changed. The coolant consists of a mixture of
specially conditioned water and the manufactur-
er's glycol-based coolant additive G13 antifreeze
with anticorrosion additives (50% for USA mod-
els · 60% for Canadian models). This mixture
'
both assures th e necessary frost protection and
protects metal components in the engine's cool-
ing system from corrosion a nd scaling. It also
raises the boiling point of the coolant .
Do not reduce the concentration 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 heating and en-
gine cooling system.
For year-round driving, antifreeze is added at the
factory for temperatures down to:
- - 31 °F ( - 3 5 °C) USA
- - 40 °F ( - 40 °C) Canada.
244
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
_& WARNING
Before you check anything in the engine com-
partment, always read and heed all WARN-
INGS
Q page 238.
(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 especially important if you
live in a region where the winter is extreme-
ly cold .
If necessary, increase the proportion
of coolant additive to 60%.
- When adding coolant additive to your cool-
ing system, remember :
- We recommend using only coolant addi-
tive G12++ or G13 (check the label) for
your vehicle. This coolant additive is avail-
able at authorized Audi dealers. Other
types of antifreeze can significantly re-
duce corrosion protection . The resulting
corrosion can cause a loss of coolant and
serious engine damage .
- Do not add any type of radiator leak sealant
to your vehicle's engine coolant . Adding ra-
diator repair fluid may adversely affect the
function and performance of your cooling
system and could result in damage not cov-
ered by your New Vehicle Limited Warranty.
Adding coolant
Fig. 191 Engine compart ment : coolant expansion tank
cover
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