Volkswagen Golf Variant 2007 Maintenance Manual page 94

Golf Variant 2007 ➤ , Golf Variant 2010 ➤ , Jetta 2005 ➤
Maintenance - Edition 09.2009
– Check concentration of coolant additive using refractometer -
T10007- (refer to operating instructions).
The scale -1- of the refractometer is calibrated for coolant addi‐
tives G 11, G 12; G 12+ and G 12++.
The scale -2- is only calibrated for coolant additive G13. (originally
L80)
Note
Frost protection must be guaranteed to approx. -25 °C.
♦
If for climatic reasons a greater frost protection is required, the
♦
amount of G 12+ or G 12++ can be increased, but only up to
60 % (frost protection to about -40 °C), as otherwise frost pro‐
tection is reduced again and cooling effectiveness is also
reduced.
– If frost protection is insufficient, drain coolant and top-up with
coolant additive G 12++
Note
Observe disposal regulations!
Caution
Only tap water may be used for mixing. Well water does not
have the required quality to ensure the effectiveness of cool‐
ant.
– Check coolant additive concentration after road test again.
4.24.2 Checking coolant level and replenish
coolant additive if necessary
– Check coolant level in 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).
90
4. Descriptions of work
⇒ page 90 .