Opel Speedster Operation, Safety, Maintenance Manual page 74

Coolant level
Hardly any losses occur since the cooling
system is sealed and it is thus rarely
necessary to top up the coolant.
The coolant level in the expansion tank should
be level with the centre seam when the
system is cold. It rises at engine operating
temperature and drops again when the engine
cools down. If the level falls below the
seam, the coolant should be replenished.
Flemove filler cap carefully so that pressure
can escape slowly. Top up anti-freeze. If no
anti-freeze is available, top up with clean tap
water.
After topping up with water, have the
concentration checked,
added if necessary, by an Authorised Opel
Dealer.
When closing, tighten coolant filler cap as far
as it will go.
Coolant temperature
For physical reasons, the engine temperature
gauge shows the coolant temperature only if
the coolant level is adequate.
During operation the system is pressurized.
The temperature may therefore rise to over
100 °C.
If the temperature gauge flashes, check the
coolant level immediately.
I Coolant level too low:
Top up coolant, see Coolant level. To
remedy the cause of the coolant loss,
consult an Authorised Opel Dealer.
I Coolant level OK:
Consult an Authorised Opel Dealer
immediately to remedy the increased
coolant temperature.
centre
and anti-freeze
.
Brake fluid
Brake uid
The fluid
higher than the "MAX" mark or lower than the
"MIN" mark.
To top up, use Opel heavyduty brake fluid
(see Technical Data). It is essential to ensure
absolute cleanliness during this process as
contamination of
malfunction of the braking system.
After correcting the brake fluid level, have the
cause of the loss eliminated by an Authorised
Opel Dealer.
level
level in the container must not be
the brake fluid can lead to
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