Buick 1997 Riviera Owner's Manual page 219

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How
to Add Coolant to the Coolant
Recovery Tank
If you haven't found a problem yet, but the coolant level
isn't at
FULL
COLD, add a
50/50
mixture of clean water
(preferably distilled) and DEX-COOL' (silicate-free)
antifkeeze at the coolant recovery tank. (See "Engine
Coolant" in the Index for more information.)
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mix will. Your vehicle's coolant warning
system is set for the proper coolant mix.
CAUTION: (Continued)
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 50/50
mix
of clean water and DEX-COOL@ coolant.
NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mix.
5-18

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