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Home >> Audi >> 2010 >> S4 Automatic DCT >> Repair and Diagnosis >> External Pages >> Different car >> Section 948 (Engine Cooling System (Service Information - CYNB - 2 Of 2)) >> 19 Cooling System >> Coolant System/Coolant >> Coolant, Draining And Filling >> Coolant Specification

Coolant Specification

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NOTE:

The Mixture Of The Water Used Greatly Influences The Effectiveness Of The Coolant. The Water Quality To Be Used Is Based On The Contents, Which Can Be Specific To A Country Or Even A Region. Distilled Water Fulfills All Requirements. For This Reason, Distilled Water Must Be Used When Adding Coolant Or Filling Coolant For The First Time.

Use only coolant additives listed. 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 prevents freezing and corrosion damage and calcium deposits. Additionally, the boiling temperature will be raised. For this reason the cooling system must be filled with coolant additive year-round.

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

The :T10007A  MUST be used to determine the current freeze protection value.

GWWN01-11006Courtesy of AUDI OF AMERICA, LLC

Freeze protection must be assured down to minimum -25 °C (-13 °F) (in arctic climatic countries down to approximately -36 °C (-32.8 °F). The freeze protection may only be increased, when stronger freeze protection is needed due to the climate. But only down to -48 °C (118.4 °F), otherwise the effectiveness of the coolant decreases.

The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The frost protection must be at least -25 °C (-13 °F).

Read the freeze protection value on the scale for the coolant additive that has been added.

The temperature on the :T10007A  corresponds to the >>freezing point<<. At this temperature, ice crystals may begin to form in the coolant.

Used coolant cannot be used again.

Only use water/coolant additive to lubricate the coolant hoses.