Skoda OCTAVIA - 05-2010 Owner's Manual page 202

Note
On vehicles which are fitted with an independent auxiliary heating and ventilation, the
volume of the coolant is greater by approx. 1 ltr.
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 196.
– Check the level of coolant in the coolant expansion bottle
level when the engine is cold must lie between the
ings. The level may also rise slightly above the
is warm.
If the coolant level in the reservoir is too low, this is indicated by the warning light in
the instrument cluster  page 31, "Coolant temperature/coolant level ". We never-
theless 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.
Using the system Safety
Fig. 164 Engine compartment: Coolant
expansion bottle
 fig.
164. The coolant
A A a
(MIN) and (MAX) mark-
b
A a
(MAX) marking when the engine
Driving Tips
Losses can only occur through the pressure relief in the cap of the coolant expansion
bottle which is completely free of leaks if the coolant boils as a result of overheating
and is forced out of the cooling system.
WARNING
Read and observe the warning notes  page 197, "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 overheating
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 200. Do not use an alternative additive if the coolant additive
G13 is not available in exceptional cases. Just top up the system with water and as soon
as possible arrange adjustment to correct the mixing ratio of water and coolant addi-
tive again by a specialist garage.
Only use fresh coolant for topping up the system.
Do not fill up over the "MAX" marking! Excess coolant which is heated up is forced out
of the cooling system through the pressure relief valve in the cap of the coolant
compensation bottle.
Wait until the engine has cooled down for a system which has suffered a major loss of
coolant before pouring in coolant. This is necessary to avoid engine damage.
General Maintenance Breakdown assistance
Inspecting and replenishing
 fig. 164
and
.
Technical Data
201