Audi A6 Typ 4G: Cooling system
Coolant
The engine cooling system is filled with a mixture of purified water and coolant additive at the factory.
This coolant must not be not changed.
The coolant level is monitored through the
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indicator
light. However, we do recommend
occasionally checking the coolant level
manually.
If you must add coolant, use a mixture of water and coolant additive. Mixing the coolant additive with distilled water is recommended.
Coolant additive
The coolant additive is made of anti-freezing and corrosion protection agents. Only use the following coolant additives. These additives may be mixed with each other.
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The amount of coolant additive that needs to be mixed with water depends on the climate where the vehicle will be operated. If the coolant additive percentage is too low, the coolant can freeze and damage the engine.
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Note
- Before the start of winter, have your authorized Audi dealer or authorized Audi Service Facility check if the coolant additive in your vehicle matches the percentage appropriate for the climate. This is especially important when driving in colder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the engine.
If this happens, only use water and restore the correct mixture ratio with the specified coolant additive as soon as possible.
- Only refill with new coolant.
- Radiator sealant must not be mixed with the coolant.
