Saturn 2009 ASTRA - Manual (Page 198)

How to Add Coolant to the
Coolant Reservoir
Notice: This vehicle has a
specific coolant fill procedure.
Failure to follow this procedure
could cause the engine to
overheat and be severely
damaged.
If you have not found a problem yet,
check to see if coolant is visible
in the coolant reservoir. If coolant is
visible but the coolant level is not
at or above the KALT/COLD mark,
add a 50/50 mixture of clean,
drinkable water and DEX-COOL
®
coolant at the coolant reservoir,
but be sure the cooling system,
including the coolant reservoir
pressure cap, is cool before you
do it. See Engine Coolant on
page 9-16 for more information.
If no coolant is visible in the coolant
reservoir, add coolant as follows:
{ CAUTION
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. They are
under pressure, and if you turn
the coolant reservoir pressure
cap — even a little — they can
come out at high speed. Never
turn the cap when the cooling
system, including the coolant
reservoir pressure cap, is hot.
Wait for the cooling system and
coolant reservoir pressure cap to
cool if you ever have to turn the
pressure cap.
{ CAUTION
Adding only plain water to the
cooling system can be dangerous.
Plain water, or some other liquid
such as alcohol, can boil before
the proper coolant mixture will.
The vehicle’s coolant warning
system is set for the proper
coolant mixture. With plain water
or the wrong mixture, the engine
could get too hot but you would
not get the overheat warning.
The engine could catch fire and
you or others could be burned.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®
coolant.
Notice: In cold weather, water
can freeze and crack the engine,
radiator, heater core and other
parts. Use the recommended
coolant and the proper coolant
mixture.
9-14 Vehicle Service and Care