2007 PONTIAC G6 engine coolant

Checking Things Under
the Hood
{CAUTION:
An electric fan under the hood can start up
and injure you even when the engine is not
running. Keep hands, clothing, and tools
away from any underhood electric fan.
{CAUTION:
Things that burn can get on hot engine
parts and start a re. These include
liquids like fuel, oil, coolant, brake uid,
windshield washer and other uids, and
plastic or rubber. You or others could be
burned. Be careful not to drop or spill
things that will burn onto a hot engine.
316

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 330.
B. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 325.
C. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 325.
D. Engine Coolant Surge Tank. SeeEngine
Coolant on page 339.
E. Pressure Cap. SeePressure Cap on page 342.F. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 352.
G. Battery. SeeBattery on page 355.
H. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 350.
I. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 418.
319

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 330.
B. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 349.
C. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 325.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 325.
E. Engine Coolant Surge Tank. SeeEngine
Coolant on page 339.F. Pressure Cap. SeePressure Cap on page 342.
G. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 352.
H. Battery. SeeBattery on page 355.
I. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 418.
J. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 350.
321

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 330.
B. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 349.
C. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 325.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 325.
E. Electric Engine Cooling Fans. SeeCooling
System on page 345.
F. Engine Coolant Surge Tank. SeeEngine
Coolant on page 339.
G. Pressure Cap. SeePressure Cap on page 342.H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 352.
I. Automatic Transaxle Fluid Dipstick (Out of
View). See “Checking the Fluid Level” under
Automatic Transaxle Fluid (2.4L L4 and 3.5L V6
Engines) on page 332orAutomatic Transaxle
Fluid (3.6L Engine) on page 332orAutomatic
Transaxle Fluid (3.9L V6 Engine) on page 335.
J. Battery. SeeBattery on page 355.
K. Underhood Fuse Block. SeeEngine
Compartment Fuse Block on page 418.
L. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 350.
323

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 330.
B. Engine Coolant Bleed Valve.
C. Power Steering Fluid. SeePower Steering
Fluid on page 349.
D. Automatic Transaxle Fluid Dipstick (Out of
View). See “Checking the Fluid Level” under
Automatic Transaxle Fluid (2.4L L4 and 3.5L V6
Engines) on page 332orAutomatic Transaxle
Fluid (3.6L Engine) on page 332orAutomatic
Transaxle Fluid (3.9L V6 Engine) on page 335.
E. Engine Oil Fill Cap. See “When to Add
Engine Oil” underEngine Oil on page 325.
F. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 325.
G. Engine Coolant Surge Tank. SeeEngine
Coolant on page 339.
H. Pressure Cap. SeePressure Cap on page 342.
I. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 352.
J. Battery. SeeBattery on page 355.K. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 350.
L. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 418.
Engine Oil
Checking Engine Oil
It is a good idea to check the engine oil every time
you get fuel. In order to get an accurate reading,
the oil must be warm and the vehicle must be
on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 318
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several
minutes to drain back into the oil pan. If you
do not do this, the oil dipstick might not
show the actual level.
2. Pull out the dipstick and clean it with a paper
towel or cloth, then push it back in all the
way. Remove it again, keeping the tip down,
and check the level.
325

Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for ve years or
150,000 miles (240 000 km), whichever occurs rst,
if you add only DEX-COOL
®extended life coolant.
The following explains your cooling system and
how to add coolant when it is low. If you have a
problem with engine overheating, seeEngine
Overheating on page 342.A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to
−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant may require changing sooner, at
the rst maintenance service after each
30,000 miles (50 000 km) or 24 months,
whichever occurs rst. Any repairs would not
be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your
vehicle.
339

What to Use
Use a mixture of one-half clean, drinkable water
and one-half DEX-COOL®coolant which will
not damage aluminum parts. If you use this coolant
mixture, you do not need to add anything else.
{CAUTION:
Adding only plain water to your 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 would
not get the overheat warning. Your engine
could catch re and you or others could
be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:If you use an improper coolant
mixture, your engine could overheat and be
badly damaged. The repair cost would not 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 extra inhibitors and/or
additives in your vehicle’s cooling system,
you could damage your vehicle. Use only the
proper mixture of the engine coolant listed in
this manual for the cooling system. See
Recommended Fluids and Lubricants on
page 442for more information.
340

Checking Coolant
The engine coolant surge tank is located in the
rear of the engine compartment. SeeEngine
Compartment Overview on page 318for more
information on location.
{CAUTION:
Turning the surge tank pressure cap when
the engine and radiator are hot can allow
steam and scalding liquids to blow out
and burn you badly. Never turn the surge
tank pressure cap — even a little — when
the engine and radiator are hot.
The vehicle must be on a level surface. When
your engine is cold, the coolant level should be at
the FULL COLD mark or slightly higher.
341