1993 BUICK CENTURY engine oil

Automatic ‘mansaxle 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 Buick 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. Wait at least
30 minutes before checking the transaxle
fluid level
if you have been driving:
When outside temperatures are above 90°F (32°C).
At high speed for quite a while.
In heavy traffic-especially in hot weather.
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.
To check the fluid level:
Park your vehicle on a level place.
0 Place the shift lever in “P” (Park) with the parking
brake applied.
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
“P” (Park).
Let the engine run at idle for three to five minutes.
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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 coolant for your Buick 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-Mi’ 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 change. If
you use these, you don’t need to add anything else.
I
A CAUTION:
Adding only plain water to your coollng system
can
be dangerous. Plain water, or some other
liquid
like alcohol, can boil before the proper
coolant mix will. Mur vehicle’s coolant
warning system
Is set for the proper coolant
mix. With plain water or the wrong mlx, your
engine could get too hot but you wouldn’t get
the overheat warning. bur engine could catch
fire and you or others’could be burned. Use a
50/50 mPx of clean water and a proper
antifreeze.
I
: warranty. Too much
l
and crack t
other parts
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Fuse Usage
I
I
Fuse Rating
(AMPS)
A
B
C
D E
15
20
10
10
15
ECM; MAF Sensor (3300 Engine only)
ECM Injectors/Coil
Eng. A/C Relay; EGR Solenoid; Canister Purge Solenoid
Fan/Elect; Generator; DRL Module
Turn Signal Flasher; Back-up Lights;
TruWLiftgate Release
Fuse
F
G
H
I
J
K
L
M
Rating
(AMPS)
10
20
20
10
20
20
30"
5
Circuitry N
0
P
Q
10
30"
25
20
15
15
15
Circuitry
Supplemental Inflatable Restraint (Air Bagj
Tail; Park; Side Marker; License Plate; Stop/Turn Signal
Heater/Air Conditioner
Gages; Warning Indicators; Torque Convert
Clutch; Audible Warning System; Computer Command Control; Trunk Release; Brake
Warning Indicator; Rear Defog Switch;
Speedometer
Stop Lights; Hazard Flashers
Interior, Underhood, Courtesy, I/P, Trunk Lights; Door
Locks; Horn Relay, Passive Restraint
System, Deck Lid Release, Power Antenna
Liftgate Release; Power Windows
Illumination for: I/P, Radio,
Pod Lights,
Ashtray, Console Light, Heater-A/C Control,
Defog Switch, Headlight Switch
Radio, Cruise Control
Seats, Door
Locks, Rear Defog
Windshield Wipe/Wash
Cigarette Lighter
Safety Belt/Chirne (ICAM) Module (Located
behind the fuse block, above the hush panel.)
Remote Lock Control (Located behind the fuse
block, above the hush panel.) Fuel Pump, ECM (Located under the hood.)
*Circuit Breaker
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I
I
Part 7 Maintenance Schedule
IMPORTANT
KEEP ENGINE OIL
AT THE PROPER
'LEVEL AND CHANGE
AS
RECOMMENDED
This part covers the maintenance
required for your Buick. Your vehicle
needs these services to retain
its safety,
dependability and emission control
performance.
Have you purchased the
GM Protection Plan?
The Plan supplements your
new vehicle warranties.
See your Buick dealer
for details.
part 7 includes:
Introduction
A Word About Maintenance ...................... .276
Your Vehicle and the Environment ................. ,276
How This Part is Organized ...................... .276
A.. Scheduled Maintenance Services
Using Your Maintenance Schedules ................ .278
Selecting the Right Schedule ...................... ,279
Schedule1 ..................................... 280
Schedule I1 ................................... .282
Explanation of Scheduled Maintenance Services .... -284
At Each Fuel Fill .............................. .287
B. Owner Checks and Services
At Least Once a Month ......................... .287
At Least Once a Year ........................... .288
C. Periodic Maintenance Inspections ................ .290
D. Recommended Fluids and Lubricants ............ .292
E. Maintenance Record. .......................... .295
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Schedule I
Follow Schedule I if your vehicle is
MAINLY driven under one or more
of the following conditions:
When most trips are less than 4 miles
When most trips are less than
10 miles (16 km) and outside
temperatures remain below freezing.
When most trips include extended
idling and/or frequent low-speed
operation, as
in stop-and-go’ traffic.
(6 km).
When towing a trailer.
When operating in dusty areas.
Schedule I should also be followed if
the vehicle
is used for delivery
service, p?lice,
taxi or other
commercial applications.
* An Emission Control Service.
z2T The U.S. Environmental Protection Agency
has.determined that the failure to perform this
maintenance item will not nullify the emission
wamty
or limit recall liability prior to the
completion of vehicle useful life. General
Motors, however, urges that all recommended
maintenance services
be performed at the
indicated intervals and the maintenance be
recorded in “Section E: Maintenance Record.”
ITEM
NO.
TO BE SERVICED WHEN TO PERFORM
See “Explanation of Scheduled Maintenance Miles (kilometers) or Months
Services” following Schedules
I and D[. (whichever occurs first).
2 I Chassis Lubrication I Every other oil change.
Tire
and Wheel Rotation and Inspection At 6,000 Miles (10 000 km) and every 15,000
Miles (25 000 km) or as necessary. I
61
Cooling System Service* Every 30,000 Miles (50 O00 km) or 24
Months. I
8 I Spark
Plug Replacement* I Every 30,000 Miles (50 000 km). I
EGR System Inspection** Every 30,000 miles (50 OOO km)
(2.2L LA Code 4 engine only)
12 I Fuel Tank, Cap and Lines Inspection** I Every 30,000 Miles (50 OOO km). I
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Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule
I and Schedule II.
The proper fluids and lubricants to use are listed in
Section
D. Make sure whoever services your vehicle uses
ITEM
NO. SERVICE
1 Engine Oil and Filter Change-Always use
SG Energy Conserving 11 oils of proper viscosity.
The “SG” designation may be shown alone or in
combination with others, such as ‘‘SG/CC:’
“SG/CD” or “SF, SG, CC:’ etc.
To determine the preferred viscosity for your
vehicle’s engine (e.g., SAE
5W-30 or SAE
10W-30), see “Engine Oil” in the Index.
2 Chassis Lubrication-Lubricate the transaxle
shift linkage, parking brake cable guides,
underbody contact points and linkage. If your
vehicle is equipped with grease fittings, lubricate
the suspension and steering linkage. these. All parts should be replaced and all necessary
repairs done before you or anyone else drives the vehicle.
NOTE: To determine your engine’s displacement and
code, see “Engine Identification” in the Index.
ITEM
NO. SERVICE
3 Throttle Body Mounting Bolt Torque (3300 V6
Code N Engine Only)*-Check the,torque of
the mounting bolts and/or nuts.
4 Tire and Wheel Rotation and Inspection-For
proper wear and maximum tire life, rotate your
tires following the instructions
in this manual.
See “Tires, Inspection & Rotation” in the Index.
Check the tires for uneven wear or damage. If
you see irregular or premature wear, check the
wheel alignment. Check for damaged wheels also.’
*An Emission Control Service.
~2 The U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item will not nullify the.emission warranty
or limit recall liability prior
to the completion of vehicle useful life. General Motors, however, urges that all recommended maintenance services be
performed at the indicated intervals and the maintenance be recorded in “Section E: Maintenance Record.”
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Section B: Owner Checks and Services
Listed below are owner checks and services which should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle. Be
sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown in
Section
D.
At Each Fuel Fill (It is important for you or a service station attendant to perform these undechd checks at each fuel fill.)
CHECK
I OR SERVICE I WHAT TO DO
Engine Oil Level
Check the engine oil level and add the proper oil if necessar\
y. See “Engine Oil” in the
Index for further details.
Engine Coolant Level Check the engine coolant level in the coolant recovery tank and add \
the proper coolant mix
I if necessary. See “Engine Coolant” in the Index for furth\
er details. I
Windshield Washer Check the windshield washer fluid level in th\
e windshield washer tank and add the proper
Fluid Level
I fluid if necessary. See “Windshield Washer Fluid” in the \
Index for further details. I
At Least Once a Month
CHECK
I OR SERVICE I WHAT TO DO
Tire Inflation Check tire inflation. Make sure they are inflate\
d to the pressures specified on the Tire-
Loading Information label located on the rear edge of the driv\
er’s door. See “Tires”
in the
Index
for further details.
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Section D: Recommended Fluids and Lubricants
NOTE: Fluids and lubricants identified below by name, part number or specification may be obtained from your GM dealer.
USAGE FWID/LUBRICANT
..
Engine Oil GM Goodwrench Motor Oil or equivalent for API service SG. Energy Conserving 11 oils of
the proper viscosity.
The “SG’ designation may be shown alone or in combination with
others, such as “SGICC,” “SG/CD” or “SF, SG, CC,” etc.
TO determine the preferred
viscosity for your vehicle’s engine,
see “Engine Oil” in the Index. -1
- ~~
Engine Coolant 50/50 mixture of water (preferably distdled) and good quality ethyle\
ne glycol base antifreeze
(GM Part
No. 1052753 or equivalent) conforming to GM Specification 1825M or approved
recycled coolant‘conforming to GM Specification
1825M. I
Hydraulic Brake I Delco Supreme 1P B,rake Fluid (GM Part No. 1052535). or equivalent DOT-3 brake fluid.
System
I
Parking. Brake Guides Chassis lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB
I (GM Part No. 1052497 or equivalent).
I Power Steering
System
I
GM Hydraulic Power Steering Fluid (GM Part No. 1052884) or equivalent.
,
I
~ Automatic Transaxle I DEXRON@-IIE Automatic Transmission Fluid (GM Part No. 12345881)
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