GMC 2003 Savana - Manual (Page 268)

Whal to Use
Use a fnr)fture of ono-half dean, (frinkade waief and
one-haIt DEX’COOL''- coolant which won'l damage
aluminum parts^ If you use this coolant mtKtunOr
you don't need to add anything el&e.
Д CAUTION;
Adding only plain watar to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boll
before the proper coolant mixture will. Your
vehicle’s coolant warning aystem is set for the
proper cDOlanl mixture. With plain water or the
wrong mixture, your engine could get loo hoi
but you wouldn't get the overheat warning.
Vour engine could catch fire and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and the proper coolant.
Natice: IГ you use an improper coolant mixture,
your engine couEd 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.
ft you have to add coolanl more than tour times a year,
have your cteater check your cooling syslem
Notice: It 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.
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