1993 BUICK SKYLARK oil viscosity

What Kind of Oil to Use:
Look for three things:
SG
“SG’ must be on the oil container, either by itself or
combined with other quality designations, such
as
“SG/CC,” “SG/CD,” “SF,SG,CC;” etc. These letters
show American Petroleum Institute (API) levels
of
quality.
I
0 SAE low-30 (V6 3.3L LG7 Engine)
As shown in this 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 OF ( 16 C)
before your next oil change. When it’s very cold,
below
O°F (-18 C), you should use SAE 5W-30.
RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS
FOR BEST FUEL ECONOW AND COLD 16, SELECT THE LOWEST
SAE VISCOSITY GRADE OIL
FOR THE El.. -_ .-J TEMPERATURE RANGE.
HOT
WEATMER
r
“F
k100
+ 80
+ 60
+ 40
+ 20
0
f
r
“C
. +38
.+27
- +16
.+4
.-7
. -18
WEATHER LOOK
LABEL
FOR THIS IOW-30
1
-
-
above WF
SAE 5W-30
IF NEITHER SAE 5W-30 NOR SAE 1OW-30 GRADE OILS’ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT TEMPERATURES
ABOVE 40 DEGREES F (4 DEGREES C).
ANY OTHER GRADE
OIL NOT RECOMMENDED
DO NOT USE SAE 1OW-40,
SAE 2OW-50 OR

RECOMMENDED SAE VlSCOSlTY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
SAE VISCOSITY GRADE
OIL FOR THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER
COLD
FOR LOOK THIS @
LABEL
5W-30
"t'LcoNse94'
IE 1OW-30
SAE 5W-30 PREFERRED
IF NEITHER SAE 5W-30 NOR SAE low-30
GRADE OILS ARE AVAILABLE, SAE 30 GRADE MAY BE USED AT TEMPERATURES
ABOVE 40 DEGREES F (4 DEGREES C). WEATHER
DO NOT USE SAE 1OW-40, SAE 2OW-50 OR
ANY OTHER GRADE OIL NOT RECOMMENDED
SAE 5W-30 (L4 2.3L L40 Engine)
As shown in this viscosity chart, SAE
5W-30 is best
for your vehicle. However, you can use
SAE low-30
if it's going to be
0 OF (- 18 C) or above.
These numbers on an oil container show its viscosity, or
thickness.
Energy Conserving I1
Oils with these words on the container will help you
save fuel.
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 Buick dealer is ready to advise if you think
something should be added.
When to Change Engine Oil: See if any one of these
is true for you:
Most trips are less than 4 miles (6 km).
226
I
1

Explanation of Scheduled Maintenance equipped with grease fittings, lubricate the
Services suspension and steering linkage.
Below are explanations
of the services listed in $chediie ‘ ‘ 3. Throttle Body Mounting; Bolt Torque (3.3L Code . , I:
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 1dentific.ation” 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
An Emission Control Service.
N engine only)* -- Che& the torque of the
mounting bolts and/or nuts.
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@) 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.
4. Tire and Wheel Rotation and Inspection -- For
The U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item will not nullify the emission war\
ranty 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 i\
ntervals and the maintenance be recorded in “Section EMaintenance Record”.
274

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
Engine Oil
Engine Coolant
FLUID/LUBRICANT
GM Goodwrench Motor Oil or
equivalent for API service SG
Energy Conserving I1 oils of the
proper viscosity. The
“SG’
designation may be shown alone or
in combination with others, such as
“SGICC,”
66~~/~~,991 or
“SF,SG,CC,” etc. To determine the
preferred viscosity for your vehicle’s
engine, see “Engine Oil” in the
Index.
50/50 mixture of water (preferably
distilled) and good quality ethylene
glycol base antifreeze (GM Part No.
1052753 or equivalent) conforming
to GM Specification 1825M or
approved recycled coolant
conforming to GM Specification
1825M.
USAGE
Hydraulic Brake
System
Parking Brake
Guides
Power Steering
System
Automatic
Transaxle
Key Lock
Cylinders
Automatic
Transaxle Shift
Linkage
FLUIDlLUBRICANT
~~
Delco Supreme 11 @ Brake Fluid
(GM Part No. 1052535) or
equivalent DOT-3 brake fluid.
Chassis lubricant meeting
requirements of NLGI Grade 2,
Category LB or GC-LB (GM Part
No. 1052497 or equivalent).
GM Hydraulic Power Steering Fluid
(GM Part No. 1052884) or
equivalent.
DEXRON@ IIE Automatic
Transmission Fluid (GM Part
No.
12345881) or equivalent.
Lubricate with Multi-Purpose
Lubricant (GM Part
No. 12345120)’
synthetic
SAE 5W-30 engine oil or
silicone lubricant
(GM Part No.
1052276 or 1052277).
Engine oil.
281