Coolant, Draining And Filling: Filling

The cooling system is filled year-round with a mixture of water and coolant additive. Mixture ratio COOLANT, DRAINING AND FILLING .

Only use coolant according to Audi. Other coolant additives may above all reduce the corrosion protection effect significantly. The damage resulting from this may lead to loss of coolant and consequently to severe engine damage.

Coolant with the correct mixture ratio COOLANT, DRAINING AND FILLING  prevents freezing and corrosion damage and calcium deposits. They also raise the boiling point. For this reason the system must be filled all year round with frost and corrosion protection additives.

Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates.

Protection against frost must be assured down to approximately -25 °C (-13 °F) (in arctic climatic countries down to approximately -35 °C (-31 °F)).

The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. Coolant additive portion must be at least 40%.

If more freeze protection is needed due to the climate, increase the amount of coolant additive, but only up to 60% (freeze protection down to -40 °C (-40 °F)). Otherwise the freeze protection and cooling effectiveness will be reduced.

If the radiator, heat exchanger, cylinder head or head seal or cylinder block were replaced, do not reuse used coolant.

Dirty coolant may not be used again.

Use the T10007 to determine the level of freeze protection in the coolant system.