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Cadillac 1997 Eldorado Owner's Manual page 285

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Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL@
coolant which
won't damage aluminum parts. If you use this mixture,
you don't need to add anything else.
A,
CAUTION.:
. .
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid Bike alcohol, can boil before the proper
coolant mix will.
YQW
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
5W50
mix of clean
water and
DEX-COOE~
coolant.
If
YSU
use an improper coolant
mix, your
engine
could overheat and be badly damaged.
The
repair cost wouldn't be covered by your
warranty. Too much water
in
the mix can freeze
and crack the engine, radiator, heater core and
If you have
to
add coolant more than four times a year,
have your dealer check your cooling system.
If you use the proper coolant, you don't have to
add extra inhibitors
QF
additives which claim
to
improve the system. These can be harmful.

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