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General Information

NOTE:

The water used for mixing greatly influences the effectiveness of the coolant. Do to the different water contents which can vary due to country or region, the water quality used is defined. Distilled water fulfills all the requirements. For this reason mix coolant with distilled water when supplementing and refilling the cooling system.

Coolant in the correct mixing ratio prevents freezing and corrosion damage as well as scaling. The boiling point is also increased. For these reasons the cooling system must have coolant additive the whole year.

Especially in countries with tropical climates or when vehicle is driven under heavy load, the coolant improves the engine reliability by its increased boiling point.

Refractometer T10007A MUST be used to determine the actual freeze protection.

Fig 1: Identifying Freeze Protection Value On Scale
GWWN01-11006Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The freeze protection must be set to -13° F (-25 °C), for countries with an arctic climate, it must be set to -33° F (-36 °C). The freeze protection can be increased only when a stronger freeze protection is required due to climatic conditions. The freeze protection can be set only down to -55 F (-48 °C), otherwise the cooling effect of the coolant will be impaired.

The coolant concentration must not be reduced by adding water, even during the warmer season. The freeze protection must be a minimum of -13° F (-25 °C).

Read off the freeze protection value on the scale for each refilled coolant additive.

The temperature on the Refractometer T10007A corresponds to the crystallization point. At this temperature, the first flakes of ice begin to form.

Do not re-use used coolant.

Use only water/coolant additive as lubricant for the coolant hoses.