JMC JIMMY 1993 Owner's Manual page 290

Service & Appearance Care
What to
Use:
Use a mixture of
clean water (preferably distilled) and antifreeze that meets
"GM Specification 6038-M," which won't damage aluminum
pads. Also
use
GM Engine Coolant Supplement (sealer) with a complete coolant change. If
you use these, you don't need to add anything
else.
GAUTIWN
Adding only plain water to.
your
coofing systtem can be
dangerous.
Plain
water,
or soma
other liquid
like
alcohol;
can
bii before
the
. '
'
proper coolant mix
wilt,
Your vehicle's
coolant warning system is .set
for the proper coolant mix. With.
plain
water
or
the wrong mix, yout
engine
could get too hot
but you wouldn't gat
the
overheat warning.
Your engine
could
catch fire and you
or
others couid
be
burned. Use
it
5060 mix
of clean water'
and
a proper antifreeze.
'
Some conditions, such as air trapped in the cooling system, can affect the
coolant level
in
the ,radiator. Check the coolant level when the engine is cold
and follow the steps under "Adding Coolant" for the proper way to
add
coolant.
I f you have to add coolant more than four times a year, have your dealer
check your cooling system.
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