1998 PONTIAC GRAND AM Owners Manual

3100 Engine
The 3100 engine oil fill cap is on the front of the engine,
behind
the radiator.
Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in
when you’re through.
What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identified by
looking for the “Starburst” symbol.
This symbol
indicates that the oil has been certified by the American
Petroleum Institute
(API). Do not use any oil which
does not
carry this Starburst symbol.
A
If you change your own oil,
be sure you use oil that has
the Starburst symbol on the
front of the
oil container. If
you have your oil changed
for you, be sure the oil put
into your engine is
American Petroleum
Institute certified for
gasoline engines.
You should also use the proper viscosity oil for your
vehicle, as shown in the following chart:
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FOR BEST FUEL ECONOMY AND COLD Y’76, SELECT THE LOWEST
SAE
VISCOSITY GRADE OIL FOR THE EL. ----J TEMPERATURE RANGE.
HOT
WEATHER
’TC)
SAE sw-30 PREFERRED
COLD
WEATHER
LOOK
FOR THIS
SYMBOL 7
,I SAE I low-31
00 NOT USE SAE 2OW-50 OR ANY OTHER
GRADE OIL NOT RECOMMENDED
As shown in the chart, SAE 5W-30 is best for your
vehicle. However, you can use
SAE 1OW-30 if it’s going
to
be 0” F (- 18 O C) or above. These numbers on an oil
container show its viscosity, or thickness. Do not use
other viscosity oils, such as SAE 20W-50.
I NOTICE:
Use only engine oil with the American Petroleum
Institute Certified For Gasoline Engines
“Starburst” symbol. Failure to use the
recommended oil can result in engine damage not
covered by your warranty.
GM Goodwrench@ oil meets all the requirements for
your vehicle.
If you
are in an area where the temperature falls below
-20°F (-29”C), consider using either an
SAE 5W-30
synthetic oil or an
SAE OW-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
6-17

Engine Oil Additives
Don’t add anything to your oil. Your dealer is ready to
advise
if you think something should be added.
When to Change Engine Oil
If any one of these is true for you, use the short triplcity
maintenance schedule:
0
0
0
0
0
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such as frequent
driving in stop-and-go traffic).
Most trips are through dusty areas.
You frequently tow a trailer or use a carrier
on top of
your vehicle.
The vehicle is used for delivery service, police,
taxi
or other commercial application.
Driving under these conditions causes engine oil to
break
down sooner. If any one of these is true for your
vehicle, then
you need to change your oil and filter
every
3,000 miles (5 000 km) or 3 months -- whichever
occurs first.
If none of them is true, use the long triphighway
maintenance schedule. Change the
oil and filter every
7,500 miles (12 500 km) or 12 months -- whichever
occurs first. Driving a vehicle with a fully warmed
engine under highway conditions causes engine oil to
break down slower.
What to Do with Used Oil
Did you know that used engine oil contains certain
elements that may be unhealthy for your skin and could
even cause cancer? Don’t let used oil stay on your
skin
for very long. Clean your skin and nails with soap and
water,
or a good hand cleaner. Wash or properly throw
away clothing or rags containing used engine oil. (See
the manufacturer’s warnings about the use and disposal
of oil products.)
Used oil
can be a real threat to the environment. If you
change your own oil, be sure to drain all free-flowing oil
from the filter before disposal. Don’t ever dispose
of oil
by putting
it in the trash, pouring it on the ground, into
sewers, or into streams or bodies of water. Instead,
recycle
it by taking it to a place that collects used oil. If
you have a problem properly disposing of your used oil,
ask your dealer, a service station or a local recycling
center for help.
6-18

Air Cleaner
The air cleaner is located on the driver’s side of the
engine compartment.
To check or replace the air filter:
1. Remove the screws that hold the cover on.
2. Lift off the cover.
3. Reinstall the air cleaner filter and replace the
cover tightly. Refer to the Maintenance Schedule to determine
when to
replace the air filter.
See “Scheduled Maintenance Services” in the Index.
A CAUTION:
Operating the engine with the air cleaner off can
cause you or others to be burned. The air cleaner
not only cleans the
air, it stops flame if the engine
backfires.
If it isn’t there, and the engine
backfires,
you could be burned. Don’t drive with
it
off, and be careful working on the engine with
the
air cleaner off.
NOTICE:
If the air cleaner is off, a backfire can cause a
damaging engine fire. And, dirt can easily get
into your engine, which will damage it. Always
have the air cleaner
in place when you’re driving.
6-19

Automatic Transaxle Fluid
When to Check and Change
A good time to check your automatic transaxle fluid
level is when the engine oil is changed.
Change both the fluid and filter
every 50,000 miles
(83 000 km) if the vehicle is mainly driven under one
or more
of these conditions:
0 In heavy city traffic where the outside temperature
0 In hilly or mountainous terrain.
When doing frequent trailer towing.
regularly reaches
90°F (32°C) or
higher.
0 Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any
of these
conditions, the fluid and filter do not require changing.
See “Scheduled Maintenance Services” in the Index.
How to Check
Because this operation can be a little difficult, you may
choose
to have this done at your Pontiac dealership
Service Department.
If you do it yourself, be sure to follow all the
instructions here, or you could get a false reading on
the dipstick.
NOTICE:
Too much or too little fluid can damage your
transaxle.
Too much can mean that some of the
fluid could come out and
fall on hot engine parts
or exhaust system parts, starting
a fire. Be sure to
get an accurate reading if you check your
transaxle fluid.
6-20

Wait at least 30 minutes before checking the transaxle
fluid level if you have been driving:
0 When outside temperatures are above 90°F (32°C).
At high speed for quite a while.
In heavy traffic -- especially in hot weather.
0 While pulling a trailer.
To get the right reading, the fluid should be at normal
operating temperature, which is 180°F to 200°F
(82°C to 93°C).
Get the vehicle warmed up by driving about 15 miles
(24 km) when outside temperatures are above 50°F
(10°C). If it's colder than 50°F ( lO"C), you may have
to drive longer.
Checking the Fluid Level
Park your vehicle on a level place. Keep the
With the parking brake applied, place the shift lever
engine running.
in
PARK (P).
With your foot on the brake pedal, move the shift
lever through each gear range, pausing for about
three seconds in each range. Then, position the shift
lever
in PARK (P).
Let the engine run at idle for three to five minutes.
Then, without shutting off the engine, follow
these steps:
1. The automatic transaxle dipstick handle is red.
Pull out the dipstick and wipe it with a clean rag or
paper towel.
2. Push it back in all the way, wait three seconds and
then pull it back out again.
6-21

3. Check both sides of the dipstick, and read the
lower level. The fluid level must be
in the
cross-hatched area.
4. If the fluid level is in the acceptable range, push the
dipstick back
in all the way.
How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transaxle fluid to use.
See “Recommended
Fluids and Lubricants” in the Index. If
the fluid level is low, add only enough
of the proper
fluid to
bring the level into the cross-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough fluid at the
dipstick hole to bring
it to the proper level.
It doesn’t
take much fluid, generally less than one
pint
(0.5 L). Don ’t overj?ZZ.
I 3
I NOTICE: I
We recommend you use only fluid labeled
DEXRON@-111, because fluid with that label is
made especially for your automatic transaxle.
Damage
caused by fluid other than DEXRON-III
is not covered by your new vehicle warranty.
3. After adding fluid, recheck the fluid level as
4. When the correct fluid level is obtained, push the
described under “How
to Check.”
dipstick back
in all the way.
6-22

Manual Transaxle Fluid
When to Check
A good time to have it checked is when the engine oil is
changed. However, the fluid
in your manual transaxle
doesn’t require changing.
How to Check
Because this operation can be a little difficult, you may
choose to have this done at your Pontiac dealership Service Department.
If you do it yourself, be sure
to follow all the
instructions here, or you could get a false reading Check the fluid level only when your engine is
off, the
vehicle is parked on a level place and the manual
transaxle is cool enough for you to rest your fingers on
the transaxle case.
Then, follow these steps:
I
manual transaxle. Too much can mean that some
of the fluid could come out and fall
on hot engine
parts or exhaust system
parts, starting a fire. Be
sure to get an accurate reading if you check your
transaxle fluid.
1. The manual transaxle dipstick is white and is located
on the driver’s side rear
of the engine. Flip the
handle up and then pull out the dipstick and clean it
with a rag or paper towel.
2. Push it back in all the way and remove it.
6-23