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4.37.2 Freeze Protection, Checking and Add‐
ing Coolant Additive if Necessary
Special tools and workshop equipment required
♦ Refractometer - T10007A-
Note
Read the cut-off line to obtain an accurate value for the following
tests. Place a drop of water on the glass using a pipette to improve
the readability of the cut-off line. The cut-off line can be clearly
recognized on the “WATERLINE”.
– Check the coolant additive concentration using the Refrac‐
tometer - T10007A- . (Pay attention to the Owner's Manual).
The refractometer scale -1- is designed for coolant additives G12;
G12 Plus, G12 Plus Plus and G11.
The scale -2- only applies to coolant additive G13.
– Drain some of the coolant and add coolant additive if the freeze
protection is inadequate. Refer to
⇒ “4.37.1 Coolant Level, Checking and Filling if Necessary”,
page 110 .
Note
♦
If it cannot clearly determined which coolant additive is in the
coolant system, use the scale -2- for coolant additive G13.
♦
Please follow all waste disposal regulations!
– Check the concentration of the coolant additive again after the
road test.
4.37.3 Mixture Ratio
Caution
Use only distilled water for mixing coolant additives. By using
distilled water the optimum corrosion protection can be
reached.
Freeze protection to Coolant additive
ratio
Distilled water
-25 °C (-13 °F) approximately 40 % approximately 60 %
Golf 2013 ➤ , Golf Sportsvan 2015 ➤ , Golf Variant 2014 ➤ , e-Golf 2014 ...
Maintenance - Edition 06.2015
112 4. Procedure Descriptions
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