Audi A8 2003 Maintenance Manual page 93

– Check level of anti-freeze protection using corresponding
scale on refractometer; to do so, read off value on light-dark
border.
– If anti-freeze protection level does not meet specification in
Maintenance table: Perform following measures:
Anti-freeze protection level: Evaluation/measure:
> Specification
< Specification
– Check coolant additive concentration once more following
road test.
Note
The refractometer - T10007 A- must be used to determine the
♦
current anti-freeze concentration.
Scale -1- on the refractometer applies to coolant additives
♦
G11, G12, G12+ and G12++.
Scale -2- refers only to coolant additive G13.
♦
If more than one type of coolant additive has been used: Al‐
♦
ways use the scale for G13 to determine the anti-freeze pro‐
tection.
The temperature indicated on the refractometer - T10007 A-
♦
corresponds to the temperature at which the first ice crystals
can form in the coolant.
It is essential that anti-freeze be used in the cooling system all
♦
year round. In the correct concentration, coolant additives pre‐
vent scaling and frost and corrosion damage, and also raise
the boiling point of the coolant.
Because of its high boiling point, the coolant improves engine
♦
reliability under heavy loads in countries with tropical climates.
3.47.2 Checking coolant level
Table of test values and procedure guidelines:
Type of service:
Delivery Inspection
Inspection
Checking the coolant system for leaks is a repair measure and
should be charged separately.
Requirements:
• The vehicle must be parked on a level surface.
Depending on deviation from specification, remove a small amount of coolant
and replace it with distilled water. Repeat procedure until coolant mixture meets
correct specification.
Depending on deviation from specification, remove a small amount of coolant
and replace it with coolant additive. Repeat procedure until coolant mixture
meets correct specification.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Coolant level specification:
Coolant at level of MAX marking.
Coolant level between MIN and MAX markings.
Audi A8 2003 ➤
Maintenance - Edition 06.2014
3. Maintenance
89