Instruction book Audi A5 Cabriolet Year 2014
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 Audi A5 Cabriolet   General maintenance   Checking and topping up fluids  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 in the instrument cluster 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
G12++
TL 774 G
G13
TL 774 J
Only if above additives are not available:
G12+

TL 774 F
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
Countries with warm climate
min. 40 %, max. 45 %
min. -25 °C
Countries with cold climate
min. 50 %, max. 60 %
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.
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