oil change CADILLAC SEVILLE 1993 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine CHECK FUEL GAGE
This message will appear when your fuel supply is less than 4 gallons and
your display
is turned off.
CHECK OIL LEVEL (Northstar Only)
This message will appear when your engine oil is approximately a quart
low. If this message is displayed, check the
oil and add as needed.
CHANGE OIL SOON
This message will appear when your engine oil is less than 10 percent or
the mileage since
the last oil change is more than 6750 miles.
CHANGE ENGINE OIL
This means that the life of your engine oil has expired and it should be
changed immediately. See engine oil and filter recommendations
in the
Maintenance Schedule. After an oil change, the Oil Life Index must be
reset. See “Oil Life Indicator”
in the index on how to reset it.
ENGINE COOLANT HOT IDLE ENGINE
This message will appear when your engine coolant temperature is over
126°C (248°F). To avoid added strain on a hot engine, turn off your
Climate Control system and stop and allow your vehicle to idle until
it
cools down or the message is removed. If it does not cool down, turn off
your engine and have it serviced before driving it again. Severe engine
damage can result from an overheated engine. See “Engine Overheating”
in the Index.
ENGINE HOT - A/C COMPRESSOR OFF
This message will appear when the Climate Control is in “Auto” or
Defrost and the engine coolant is hotter than
the normal operating
temperature. To avoid added strain on a hot engine the air conditioning
compressor is automatically turned
off. When that happens, air
conditioned air
is not delivered. If the coolant temperature returns to
normal, you must select
“AUTO”, “DEFOG” or Defrost to return to a
normal A/C compressor operation.
FUEL LEVEL VERY LOW
This message serves as a warning that the fuel level in your tank is
critically low. It means you shwld stop for fuel immediately.
139

Downloaded from www.Manualslib.com manuals search engine Road Sensing Suspension (Northstar Only)
3
The Road Sensing Suspension automatically controls the ride of your
vehicle. The system controls damping forces in the shock absorbers and
struts
in response to various road and driving conditions. The system is
capable of making these changes
within milli-seconds.
The Road Sensing Suspension controller is a computer used to control
and monitor
the system. The computer receives inputs from vertical
acceleration sensors, wheel to body position sensors, vehicle speed
sensor, lift and dive signals, and determines optimum strut valving or
(suspension stiffness) for your current operating conditions. The
computer also receives feedback from the various components to
determine proper system operation. If the computer receives an incorrect
feedback from the system, an error code
will be set in memory and a
SERVICE RIDE CONTROL message
will display on the Driver
Information Center. If this message should appear, have your vehicle
serviced at your Cadillac dealer at your earliest convenience.
Oil Life Indicator
Your Cadillac has a Driver Information Center with an Oil Change
Indicator feature. This tells you when you need to change your engine oil.
It's based
upon the engine oil temperatures and your driving patterns.
To see the display,
press the Information
button several times until
" OIL LIFE
INDEX" appears.
143

Downloaded from www.Manualslib.com manuals search engine You’ll see how much oil life you have left, as a percentage. So, if you see
“95 OIL LIFE INDEX,” for example, that means that the way you’re
driving your car,
95% of your current oil life is still left.
The
“OIL LIFE INDEX’ may say to change the oil sooner than your
maintenance schedule. This can happen
if driving conditions, such as
short trips in cold weather, cause shorter oil life. Always keep a written
record
of the mileage and date when you last changed your oil. For more
information on
when to change your oil, see the “Maintenance
Schedule.”
If you see “CHANGE OIL
SOON,” it means that you have less than 10%
of your oil life left, and you should consider changing your engine oi\
l.
If you see
“CHANGE ENGINE OIL,” it means the oil life is gone and
you should change the oil right away (certainly within
200 more miles
[320 km]).
The system probably will say to change the oil between 3000 miles (5000
km) and 7500 miles (12500 km), but it may even say to change it before
3000 under very severe conditions. It all depends on your driving
patterns. If it’s been
7500 miles (12500 km) it will say to change oil.
There are
two things the system doesn’t do:
It can’t sense heavy dust in the places where you drive. If you drive in
a dusty area, you should change your oil every 3000 miles (5000 km)
or
3 months (whichever comes first), unless the display says to change
it even sooner than that.
It doesn’t check how much oil you have, so you’ll still have to check
Also, for the system to work right, it is important that you use SG oil, as
discussed earlier. for that.
To see how,
see Index under “Engine Oil.”
when You’ve Changed the Oil
When new oil is put in, you’ll need to reset your system. To do it, display
the “OIL LIFE INDEX’ by pressing the “Information” button. Then
press and hold the “STORE/RECALC’ buttons
until the display shows
“100.”
144
y.
u
H
U

Downloaded from www.Manualslib.com manuals search engine i
m .?.: ; ,:, : '.. ..... .. .,.. >. . ' . 1 $&,x,- ~~:~ x-:. , .
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
SAE VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE.
HOT
WEAntER
SAE 1OW-30
As shown in the viscosity chart, SAE 1OW-30 is best for your vehicle.
However,
you can use SAE 5W-30 if it's going to be colder than 60°F
(16 C) before your next oil change. When it's very cold, below 0 * F
(-18OC), you should use SAE 5W-30.
These numbers
on an oil container show its viscosity, or thickness. Do not
use other viscosity oils such as
SAE 1OW-40 or SAE 2OW-50.
0 Energy Conserving I1
Oils with these words on the container will help you save fuel.
ci
274

Downloaded from www.Manualslib.com manuals search engine This doughnut-shaped logo (symbol) is used on most oil containers to
help you select the correct oil.
You should look for this on the oil container, and use
only those oils that
display the logo.
GM Goodwrench@ oil
(in Canada, GM Engine Oil) meets all the
requirements for your vehicle.
Engine Oil Additives: Don’t add anything to your oil. Your Cadillac
dealer
is ready to advise if you think something should be added.
When to Change Engine Oil: Your vehicle is equipped with an engine oil
life index (EOLI) feature as part of the Driver Information Center
display (DIC). Oil change intervals are determined
by the EOLI and will
usually fall at, or between, the two recommended alternative intervals of
3,000 miles (5,000 kilometers) and 7,500 miles (12,500 kilometers), but
could
be shorter than 3,000 miles (5,000 kilometers) under some very
severe driving conditions shown in Schedule I. The system will also
indicate the need for an
oil change if 7,500 miles (12,500 kilometers) or
one year has passed.
Engine oil life remaining
is displayed through engine data as the ‘OIL
LIFE INDEX’ and as a
‘CHANGE ENGINE OIL message. The ‘OIL
LIFE INDEX’ display includes a number between
0 and 100. This is the
percentage
of oil life REMAINING based on driving conditions and
mileage driven since the last time
of the oil life indicator was reset. When
the remaining oil life is less than
lo%, a ‘CHANGE OIL SOON’ message
will appear. This is a reminder to schedule an engine oil change. When
the oil life index reaches
0, the ‘CHANGE ENGINE OIL: message will
appear. This indicates that no oil life remains and the oil should be
changed as soon as possible, but certainly within the next 200 miles (320
km).
The EOLI will not detect excessively dusty conditions or engine
malfunctions which may effect the oil.
If you drive in dusty areas, change
the engine
oil after every 3,000 miles (5,000 kilometers) or 3 months
(whichever comes first), unless instructed
to do so sooner by the DIC.
On Northstar 4.6 Liter engine equipped vehicles a ‘CHECK OIL LEVEE
message will appear whenever the oil level’s approximately one quart low.
275

Downloaded from www.Manualslib.com manuals search engine How To Reset the Oil Life Indicator: After the oil has been changed,
display the ‘OIL LIFE INDEX’ message by pressing the
‘INFORMATION’ button. Then press and hold the
‘STORE/RECALL
button until the display shows ‘100’. This will reset the oil life index. The
message will remain
OFF until the next oil change is needed. The
percentage
of oil life remaining may be check at any item by pressing the
INFORMATION button several times until the ‘OIL LIFE INDEX
message appears.
Engine Block Heater: An engine block heater can be a big help if you
have to park outside in very cold weather, -20” F (-29 “C) or colder. If
your vehicle
has this option, see “Engine Block Heater” in the Index.
What to Do with Used Oil:
A CAUTION
Used engine oil contains things that have caused skin cancer in
laboratory animals. 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 properlv throw away clothing or rags
containing used engine
oil.
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 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.
3
I
276

Downloaded from www.Manualslib.com manuals search engine 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.
J
NOTICE:
If the air cleaner is off, a backflre can cause a damaging tngine
fire, And, dirt can easily get into your engine, which will drmagc
it, Always have the air cleaner io place when you’rt ddvlng.
AUTOMTIC TRANSAXLE FLUID
When to Check and Change:
A good time to check your automatic transaxle fluid level is when the
engine oil is changed. Refer to the Maintenance Schedule to determine
when to change your
fluid. 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 a Cadillac 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.
278

Downloaded from www.Manualslib.com manuals search engine When the correct fluid level is obtained, push the dipstick back in all
the way.
How To Reset Transaxle Fluid Change Indicator: 4.6L (Northstar)
Your vehicle is equipped with a transaxle fluid change indicator.
A
“CHANGE TRANS FLUID” message will display on the Information
Center
when the power train computer determines that the transaxle
fluid needs to be changed or at each 100,000 miles
(160,000 km) interval,
whichever occurs first. When this message appears, change the t\
ransaxle
fluid and reset the transaxle fluid life indicator
as follows:
Turn the key “ON” with the engine stopped.
Press and hold the “OFF” and “REAR DEFOG” buttons on the
climate control simultaneously
until the “TRANS FLUID RESET”
message appears
in the Information Center (between 5 and 20
seconds).
ENGINE COOLANT
The following explains your cooling system and how to add coolant when
it is low. If you have
a problem with engine overheating, see “Engine
Overheating” in the Index.
The proper coo’ It for
your Cadillac will:
Give freezing protection down to -34°F (-37’C) .
Give boiling protection up to 262 ” F (128 ” C) .
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights work as they should.
What to Use:
Use a mixture of one-half clean water (preferably distilled) and one\
-half
antifreeze that meets
“GM Specification 1825-M,” which won’t damage
aluminum parts. You can also use a recycled coolant conforming to
GM
Specification 1825-M with a complete coolant flush and refill. Use GM
Engine Coolant Supplement (sealer) with any complete coolant c\
hange.
If you use these, you don’t need to add anything else.
Y
c.
282

Downloaded from www.Manualslib.com manuals search engine I
The Northstar engine is designed to require less maintenance than many
other
DOHC V-8 engines. Engine systems are designed to remind the
driver when service is required.
An oil life index indicator monitors
ongoing operating conditions and reminds the driver when an oil change
is needed.
A low coolant warning message keeps track of the level of this
vital fluid. Direct acting hydraulic tappets provide maintenance free zero
lash operation
of the 32 valves from idle to the 6500 rpm redline. The
camshafts are driven by a two stage roller chain assembly which is
designed to provide quiet maintenance free operation. Platinum tipped
spark plugs increase the replacement interval
to 100,OO miles.
The four valve per cylinder design provides more efficient engine
breathing which results in higher power than comparable
two valve
engines. The central location
of each spark plug ensures a fast and
complete burning
of the fuel/air mixture. The induction system uses
smooth thermoplastic tubes
to channel air into the cylinders. The
smoothness
of the tubes is equivalent to the elaborate port polishing
methods used for race car engines. Careful design using the shape and
length
of the tubes boosts horsepower by using sonic pressure waves
created by the motion
of the inlet valves to increase the amount of air
entering each cylinder.
The Northstar engine
is also designed to be very durable. The aluminum
block has cast-in-place iron cylinder liners for greater wear resistance.
High strength forged steel connecting rods support the free floating
piston pins
in bronze bushings for superior high speed performance. The
fillits
of the nodular iron crankshaft undergo a high pressure compression
rolling operation
to improve their resistance to fatigue.
Quiet operation
is enhanced by the use of special materials and designs.
The front cover of the engine is stamped from laminated steel which
damps out noise. Special cam cover gasket seals isolate valve train
operation.
The fuel injectors are placed inside the induction system
housing
to eliminate the clicking noise which is common to other fuel
injected engines.
The Northstar engine
is designed to provide years of efficient, reliable,
satisfying operation. We
think it is also just plain fun to drive.
33 7

Downloaded from www.Manualslib.com manuals search engine FLUID CAPACITIES
Transaxle (4T6OE) .............................. 20 pts. (9.5 L)
Transaxle (4T80E)
.............................. 30 pts. (14 L)
Engine Oil (4.9 L)
............................ 5 quarts (4.7 L)
With Filter Change ........................... 5.5 qts (5.2 L)
Engine Oil (4.6 L)
.............................. 6.5 qts (6.2 L)
With Filter Change ............................ 7 qts (6.6 L)
Engine Cooling System
........................ 12.3 qts (1 1.7 L)
Fuel Tank .................................. 20 gallons (76 L)
Power Steering .............................. 1.3 quarts (1.2 L)
Windshield Washer Reservoir .................. 4.2 quarts (4.1 L)
TIGHTEN TORQUE
Spark Plugs (4.9 L) ........................ .20 Nqm (15 lbs. ft.)
Spark Plugs (4.6
L) ......................... 15 Nom (11 lbs. ft.)
Oil Pan Drain Plug (4.9 L)
................... 30N-m (22 Ibs. ft.)
Oil Pan Drain Plug (4.6 L) ................... 20N.m (15 lbs. ft.)
KEHICLE DIMENSIONS
Seville/STS
Shipping Weight .......................... 3595 lbs. (1630.5 kg)
Shipping Weight
(STS) .................... 3807 lbs. (1726.8 kg)
Wheel Base
................................ 111 in. (2819 mm)
Length .................................. .203.9 in. (5179 mm)
Height ................................... .54.0 in. (1371 mm)
Width.. .................................. .74.3 in. (1887 mm)
Front Tread ............................... .60.9 in. (1547 mm)
Rear Tread ............................... .60.9 in. (1547 mm)
349