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Note
Read precise value for the following tests at bright/dark boundary.
Using a pipette, place a drop of water on the glass to improve the
readability of the bright/dark boundary. The bright/dark boundary
can be clearly recognised on the “WATERLINE”.
– Check concentration of coolant additive using refractometer -
T10007 A- (refer to operating instructions).
The scale -1- of the refractometer is calibrated for coolant addi‐
tives G12; G12 Plus, G12 Plus Plus and G11.
The scale -2- is only calibrated for coolant additive G13.
– If frost protection is too low, drain coolant and add coolant ad‐
ditive
Note
Observe disposal regulations!
– Check coolant additive concentration after road test again.
4.18.2
Checking coolant level, replenish cool‐
ant if necessary
– Check coolant level in coolant expansion tank with engine
cold.
♦ Delivery inspection: Coolant level above “min” marking
-arrow-
♦ Inspection service: Coolant level above “min” marking
-arrow-
– If coolant is too low, add required amount according to mixture
ratio.
Note
If fluid loss is greater than can be expected through normal use,
determine source and rectify (repair measure).
4.18.3
Mixture ratio:
Caution
Only distilled water may be used for mixing coolant additives.
The use of distilled water ensures optimum protection against
corrosion.
Frost protection to
Coolant additive
portion
Distilled water
-25 °C
approx. 40 %
approx. 60 %
-36 °C
approx. 50 %
approx. 50 %
Golf 2013 ➤
Maintenance - Edition 10.2012
4. Descriptions of work
51
