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GMC 2003 Envoy XL - Engine Coolant; What to Use

GMC 2003 Envoy XL
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Engine Coolant
The cooling system in your vehicle is filled with
DEX-COOL@ engine coolant. This coolant is designed
to remain in your vehicle for
5 years or 150,000 miles
(240
000
km), whichever occurs first,
if
you add
only DEX-COOL@ extended life coolant.
The following explains your cooling system and how to
add coolant when it is low.
If
you have a problem
with engine overheating, see Engine Overheating on
page
5-27.
A
50/50
mixture of clean, drinkable water and
DEX-COOL@ coolant will:
Give freezing protection down
to
-34°F (-37°C).
Give boiling protection up
to
265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
0
Let the warning lights and gages work as
they should.
Notice:
When adding coolant,
it
is important that
you use only DEX-COOL@ (silicate-free) coolant.
If coolant other than DEX-COOL@ is added to
the system, premature engine, heater core
or
radiator corrosion may result. In addition, the engine
coolant will require change sooner
--
at
30,000
miles
(50,000
km) or 24 months, whichever occurs first.
Damage caused by the use
of
coolant other
than DEX-COOL@ is not covered by your new
vehicle warranty.
What
to
Use
Use a mixture of one-half clean, drinkable wafer and
one-half DEX-COOL@ coolant which won’t damage
aluminum parts. If you use this coolant mixture,
you don’t need to add anything else.
5-24

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