BUICK REGAL 1993 Owners Manual

Selecting the Right Schedule
First you’ll need to decide which of the two schedules is
right for your vehicle. Here’s how to decide which
schedule
to follow:
Schedule I
Is any one of these true for your vehicle?
Most trips are less than 4 miles (6 km).
Most trips are less than 10 miles (16 km) when
outside temperatures are below freezing.
0 The engine is at low speed most of the time (as in
door-to-door delivery, or in stop-and-go traffic).
You operate your vehicle in dusty areas.
You tow a trailer.
If any one (or more) of these is true for your driving,
follow Schedule
I.
Schedule I1
Follow Schedule I1 only if none of the above conditions
is true.
269
ProCarManuals.com

Scheduled Maintenance Services Schedule I
Follow Schedule I if your car is MAINLY driven under one or more of the following conditions: I
0 When most trips are less than 4 miles (6 kilometers).
0 When most trips are less than 10 miles (16 kilometers) and outside temperatures remain below freezing.
0 When most trips include extended idling and/or frequent low-speed operation as in stop-and-go traffic.
0 Towing a trailer.*?
When operating in dusty areas.
Schedule I should also be followed if the car is used for delivery service, police, taxi or other commercial applications.
TO BE SERVICED
(See Explanation of
Scheduled Maintenance
Services Following Schedules
I and 11)
Item No.
1. Engine Oil & Oil Filter
Change*
2. Chassis Lubrication
3. Throttle Body Mounting Bolt Torque*
4. Tire & Wheel Inspection &
Rotation
5. Engine Accessory Drive
' Belt(s) Inspection*
6. Cooling System Service*
65 70 75 80
0.00
0 0
270
ProCarManuals.com

The services shown in this schedule up to 48 000 miles (80 000 km) should be performed after
48 000 miles at the same intervals.
* An Emission Control Service.
3- 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 compktion 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 EMaintenance
Record".
271
ProCarManuals.com

Scheduled Maintenance Services Schedule I1
IIONLY if none of the driving conditions specified in Schedule I apply.
TO BE SERVICED
(See Explanation of
Scheduled Maintenance
Services Following Schedules
I and 11)
Item No.
1. Engine Oil Change*
Oil Filter Change*
2. Chassis Lubrication
3. Throttle Body Mounting Bolt Torque*
4. Tire & Wheel Inspection & Rotation
5. Engine Accessory Drive Belt(s) Inspection*
6. Cooling System Service*
WHEN TO PERFORM
Miles (kilometers)
or
Months, Whichever
Occurs First
I MILES (000)
lm
KILOMETERS (
Every 7 500 mi. (12 500 km) or 12 mos. 1~101010 ~~
At first and then every other oil change
Every
7 500 mi. (12 500 km) or 12 mos.
At 7 500 mi. (12 SO0 km) only
At
7 500 mi. (12 SO0 km) and then every
15 000 mi. (25 000 km) or as necessary 1.1 1.1
I I I 0 Every 30 000 mi. (SO 000 km) or 24 mos. I I I
I I I 0
+
272
ProCarManuals.com

WHEN TO PERFORM (See Explanation of
Scheduled Maintenance Miles (kilometers) or
Services Following Months, Whichever
Schedules I and 11) Occurs First
Item No.
Every 30 000 mi. (SO 000 km)
r
~~ ~~
The services
shown in this schedule up to 45 000 miles (75 000 km) should be performed after 45 000 miles at the Same
intervals.
273
ProCarManuals.com

Explanation of Scheduled Maintenance
Services
Below are explanations of the services listed in Schedule
I and Schedule 11.
The proper fluids and lubricants to use are listed in
Section D. Make sure whoever services your vehicle uses
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.
1. Engine Oil and Filter Change* -- Always use SG
Energy Conserving I1 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. 3.
Throttle Body Mounting
Bolt Torque* -- 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.
5. Engine Accessory Drive Belt(s) Inspection --
Inspect the belt(s) for cracks, fraying, wear and
proper tension. Replace as needed.
6. Cooling System Service* -- Drain, flush and refill
the system
with new or approved recycled coolant
conforming to GM Specification 1825M. Keep
coolant at the proper mixture as specified. See
“Coolant”
in the Index. This provides proper freeze
protection, corrosion inhibitor level and engine
operating temperature.
Inspect hoses and replace
if they are cracked,
swollen or deteriorated. Tighten screw-type hose
clamps. Clean the outside
of the radiator and air
* An Emission Control Service.
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 tothe completion of vehicle useful life. General Motors, however, urges that all recommended maintenance \
services he performed at the indicatcd intervals and the maintenance be recorded in ”Section E:Maintenance Record”.
274
ProCarManuals.com

conditioning condenser. Wash the pressure cap and
neck.
To help ensure proper operation, we recommend a
pressure test of both the cooling system and the
pressure cap.
7. Transaxle Service -- Change both the fluid and
filter every
15,000 miles (25 000 km) if the vehicle
is mainly driven under one or more of these
conditions:
0 In heavy city traffic where the outside
temperature regularly reaches
90 F (32 C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police car or delivery
If you do not use your vehicle under any of these
conditions, change both the fluid and filter every
100,000 miles ( 160 000 km).
service.
8. Spark Plug Replacement* -- Replace
spark plugs
with the proper type. See “Specifications Chart” in
the Index.
9. Spark Plug Wire Inspection”? -- Inspect for
burns, cracks or other damage. Check the boot fit at
the distributor and at the spark plugs. Replace wires
as needed.
10.
Air Cleaner Filter Replacement* -- Replace every
30,000 miles (50 000 km) or more often under dusty
conditions. Ask your dealer for the proper
replacement intervals for your driving conditions.
11
.. Fuel Tank, Cap and Lines Inspection”? -- Inspect
fuel tank, cap and lines (including fuel rails and
injection assembly, if equipped) for damage or leaks.
Inspect fuel cap gasket for an even filler neck
imprint or any damage. Replace parts as needed.
Periodic replacement of the fuel filter is not required.
275
ProCarManuals.com

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 underhood checks at each fuel
fill.)
WHAT TO DO
Engine Oil
the proper oil if necessary. See
Level Check the
engine oil level and add
“Engine
Oil” in the Index for further
details.
Engine Coolant coolant recovery tank and add the
Level Check the
engine coolant level in the
“Coolant”
in the Index for further
proper
coolant mix if necessary. See
details.
Windshield
level in the windshield washer tank
Washer Fluid Check
the windshield washer fluid
and add the proper fluid if necessary.
Level
See “Windshield Washer Fluid”
in
the Index for further details.
276
-
ProCarManuals.com

At Least Once A Month
CHECK OR
SERVICE
Tire Inflation
WHAT TO DO
Check tire inflation. Make sure they
are inflated
to the pressures specified
on the Tire-Loading Information
label located on the rear edge of
the
driver’s door. See “Tires” in the
Index for further details.
c!%&lkY 1 --“-+
Starter Switch
At Least Once A Year
I CHECKOR
SERVICE
I WHAT TO DO
Key Lock
the lubricant specified in Section
D. Cylinders Lubricate the
key lock cylinders with
Body
Lubrication Lubricate all
body door hinges.
Also
lubricate all hinges and latches,
including those for the hood, glove
box door and console door. Section
D tells you what to use.
1. Before you start, be sure you have
enough room around the vehicle.
2. Firmly apply both the parking brake
(see “Parking Brake”
in the Index if
necessary) and the regular brake.
NOTE:
Do not use the accelerator
pedal, and
be ready to turn off the
engine immediately if
it starts.
3. Try to start the engine in each gear.
The starter should work only in “P”
(Park) or
“N” (Neutral). If the starter
works
in any other position, your
vehicle needs service.
277
ProCarManuals.com

CHECK OR
Steering
Column Lock
WHAT TO DO
While parked, and with the parking
brake set, try to
turn the key to
“LOCK”
in each shift lever position.
The key should turn to “LOCK”
only when the shift lever is in “P’
(Park).
“LOCK.”
0 The key should come out only in
-t
CHECK OR
SERVICE
Parking Brake
and Automatic
Transaxle
“P’
(Park)
Mechanism
Check
WHAT TO DO
.r
CAUTION: When you are doing
s check, your vehicle could
begin to move. You or others
-Ad be injured and property
Jld be damaged. Make sure
rllzre
is room in front of your
U4icle
in case it begins to roll.
__ ready to apply the rnnular
brake at once shoul the
vehicle begin
to mc 5.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the
parking brake.
To check the parking brake: With
the engine running and transaxle
in“N” (Neutral), slowly remove
foot pressure from
the regular
brake pedal.
Do this until the
vehicle is held by the parking brake
only.
To check the “P,’ (Park)
mechanism’s holding ability: Shift
to
“P” (Park). Then release all
brakes.
278
ProCarManuals.com