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NOTICE:
When adding coolant it is important that you use
DEX-COOL
TM
(orange-colored, silicate-free)
coolant meeting
GM
Specification
6277M.
If
silicated
coolant
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.
What to Use
Use a mixture of one-half
clean
wuter
(preferably
distilled) and one-half
DEX-COOL
TM
(orange-colored,
silicate-free) antifreeze that meets GM Specification
6277M, which won’t damage aluminum parts. Use
GM Engine Coolant Supplement (sealer) (GM Part
No.
3634621) with any complete coolant change.
If
you
use
this mixture, you don’t need to add anything else.
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mix will. Your vehicle’s coolant warning
system is set for the proper coolant mix. With
plain water or the wrong mix, your engine could
get too hot but you wouldn’t get the overheat
warning. Your engine could catch fire and you
or
others could be burned. Use
a
50/50
mix
of
clean
water and
DEX-COOL
TM
(orange-colored,
silicate-free) antifreeze.