Pontiac 2010 Vibe - Manual (Page 204)

What to Use
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®
coolant, which will not damage
aluminum parts. If this coolant
mixture is used, nothing else
needs to be added.
{ CAUTION
Adding only plain water to the
cooling system can be dangerous.
Plain water, or some other liquid
such as alcohol, can boil before
the proper coolant mixture will.
The vehicle’s coolant warning
system is set for the proper coolant
mixture. With plain water or the
wrong mixture, the engine could
get too hot but would not get the
overheat warning. The engine
could catch fire and you or
others could be burned. Use a
50/50 mixture of clean, drinkable
water and DEX-COOL
® coolant.
Notice: If an improper coolant
mixture is used, the engine could
overheat and be badly damaged.
The repair cost would not be
covered by the vehicle warranty.
Too much water in the mixture
can freeze and crack the engine,
radiator, heater core, and other
parts.
• Gives freezing protection down to
− 34°F ( − 38°C).
• Gives boiling protection up to
265°F (129°C).
• Protects against rust and
corrosion.
• Helps keep the proper engine
temperature.
• Lets the warning lights and gages
work as they should.
Notice: Using coolant other than
DEX-COOL can cause premature
engine, heater core or radiator
corrosion. In addition, the engine
coolant may require changing
sooner, at 30,000 miles
(50 000 km) or 24 months,
whichever occurs first. Any
repairs would not be covered
by the vehicle warranty. Always
use DEX-COOL (silicate-free)
coolant in your vehicle.
Checking Coolant
The vehicle must be on a level
surface. When the engine is cold,
the coolant level should be at LOW,
or a little higher. When the engine
is warm, the level should be up to
FULL, or a little higher. If it is not,
there could be a leak at the pressure
cap or in the radiator hoses, heater
hoses, radiator, water pump, or
somewhere else in the cooling
system.
See Engine Compartment Overview
on page 9-6 for the location of
the coolant recovery tank.
9-20 Vehicle Care