Enginecoolant - Buick 1993 Century Owner's Manual

Engine 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" in the Index.
The proper coolant for your Buick will:
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 262" F (128" C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights work as they should.
What to Use: Use a mixture of one-half clean water
(preferably distilled) and one-half antifreeze that meets
"GM Specification 1825-Mi' which won't damage
aluminum parts. You can also use a recycled coolant
conforming to GM Specification 1825-M with a complete
coolant flush and refill. Use GM Engine Coolant
Supplement (sealer) with any complete coolant change. If
you use these, you don't need to add anything else.
I
A
CAUTION:
Adding only plain water to your coollng system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before
the proper
coolant
mix
will. Mur vehicle's coolant
warning system I s set for the proper coolant
mix. With plain water or the wrong mlx, your
engine could get too hot but you wouldn't get
the overheat warning.
b u r
engine could catch
fire and you
or others'could
be burned. Use a
50/50 m P x of clean water and a proper
antifreeze.
I
:
warranty. Too much
l
and
crack
t
other parts
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