Cadillac 2003 Seville Owner's Manual page 276

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Use a mixture of one-haif clean, drinkable water and
one-half DEX-COOL@ coolant which won't damage
aluminum parts. If you use this coolant mixture,
you don't need to add anvthir- else.
Addin- mly
p
n water to yo1 cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle's coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, 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 mixture
o f
clean,
drlnk2h!LI ?n?l,er 2nd DEX-CQQP ccc!an!.
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J V W
w e b
UII
m m m m r m v r r m
Y
A h f i r a .
!f
v n n n Iacn
a n i m n r m n a r
t-Oelana mixture
your engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice: If you use the proper coolant, you don't
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
5-27

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