Skoda Octavia Tour Owner's Manual page 135

134 Inspecting and replenishing
An authorised Škoda Service Partner can also supply you with the correct coolant
additives.
Coolant quantity
Petrol engines
1.4 ltr./59 kW - EU4
1.6 ltr./75 kW - EU4, EU2
Diesel engine
2.0 ltr./81 kW TDI CR - EU4
Caution
•
Other coolant additives may cause operational problems which, in particular,
involves significantly reducing the anticorrosion effect.
•
Any faults or problems resulting from corrosion may cause a loss of coolant
and, as a consequence of this, result in major engine damage.
Inspecting the coolant level
The coolant expansion bottle is located in the engine compartment on the right.
– Switch the engine off.
Open the bonnet  page 130.
–
Content
7.1
7.4
Content
8.4
Fig. 124 Engine compartment: Coolant
expansion bottle
– Check the level of coolant in the coolant expansion bottle
coolant level when the engine is cold must lie between the
(MAX) markings. The level may also rise slightly above the
when the engine is warm.
If the coolant level in the reservoir is too low, this is indicated by the warning light
in the instrument cluster  page 25, "Coolant temperature/coolant level ". We
nevertheless recommend inspecting the coolant level directly at the reservoir from
time to time.
Loss of coolant
A loss of coolant is first and foremost an indication of a leak in the system. You
should not merely top up the coolant in the reservoir. It is also important to have the
cooling system inspected without delay by a specialist garage.
Losses can only occur through the pressure relief in the cap of the coolant expan-
sion bottle which is completely free of leaks if the coolant boils as a result of over-
heating and is forced out of the cooling system.
WARNING
Read and observe the warning notes  page 131, "Working in the engine
compartment" before working in the engine compartment.
Caution
One should contact a specialist garage as soon as possible if the source of over-
heating itself cannot be determined and removed, since there may be grave
damage to the engine.
Replenishing the coolant
– Switch the engine off.
– Allow the engine to cool down.
– Place a cloth over the cap of the coolant expansion reservoir
unscrew the cap carefully by turning it to the left 
– Top up the coolant.
– Screw the cap tight until it is heard to lock.
The coolant which you use for replenishing the system, must comply with one
specific specification  page 133. Do not use an alternative additive if the coolant
additive G13 is not available in an emergency. Just top up the system with water and
 fig.
124. The
A (MIN) and A a
b
a
A (MAX) marking
 fig. 124
and
.