Instruction book Audi A3 Version Year 2017
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Audi A3 Service and care Checking and top... Cooling system
The engine cooling system is filled at the factory with a mixture of conditioned water and coolant additive. This coolant must not be changed.
The coolant level is monitored by a warning lamp link. However, we recommend that it should be checked occasionally.
If you do need to top up the coolant, use a mixture of water and coolant additive. We recommend mixing coolant additive with distilled water.
Coolant additive
The coolant additive contains anti-freeze and corrosion protection agent. Only use one of the following coolant additives. It is possible to mix these additives.
Coolant additive
Specification
G13
TL 774 J
G12++
TL 774 G
The amount of coolant additive which needs to be mixed with the water depends on the temperatures to be expected in the winter season. If the anti-freeze concentration is too low, the coolant can freeze and cause engine damage.
 
Coolant
additive
Frost protection
Hot regions
min. 40%
max. 45%
min. -25 °C
Cold regions
min. 50%
max. 55%
max. -40 °C
CAUTION
  • Have your qualified workshop check the cooling system before the winter season to make sure that the anti-freeze concentration is adequate for the conditions to be expected. This applies particularly if you drive into a colder climate zone.
  • To prevent damage to the engine, do not use a different type of anti-freeze additive if the approved type of additive is not available. In this case use only water and bring the coolant concentration back up to the correct level as soon as possible by putting in the specified additive.
  • Always top up with fresh, unused coolant.
  • Radiator sealants must not be added to the coolant.
Note
(Applies to RS models: ) In certain weather conditions, steam may be noticed at the front of the vehicle as rain or snow on the radiator evaporates.
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