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X-Valve Engine
When to Add Oil:
If the oil is at or below the ADD mark,
you’ll need
to add some oil. But you must
use
the right kind. This section explains
what kind
of oil to use. For crankcase
capacity, see “Capacities and
Specifications”
in the Index.
NOTICE:
Donl add too tnuch oil. If your
engine has
so much oil that the oil
level gets above the upper mark that
shows the proper operating range,
your engine
could be damaged.
IO-Valve Engine
Just 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 Oil to Use
Beginning midyear 1993, oils of the
proper quality for your vehicle will be
identified with this new “starburst”
symbol. The “starburst” symbol indicates
that the
oil has been certified by the
American Petroleum Institute (API), and
is preferred for use in your gasoline
engine.
You should look for this on the front of
the oil container, and use o& oils that
display this new symbol.
You should also use the proper viscosity
oil for your vehicle, as shown in the
following chart:
163 ... ProCarManuals.com
Page 165 of 258

Service and Appearance Care
Recommended SAE Viscosity
Grade Engine Oils
For best fuel economy and cold starting,
select the
lowest SAE viscosity grade oil
for the expected temperature range.
HOT
WEATHER
-80 -27
SAE 5W-30 PREFERRED
COLD
WEATHER
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).
DO NOT USE SAE 1OW-40, SAE 2OW-50 OR ANY OTHER GRAOE OIL NOT RECOMMENDED.
As shown in the chart, SAE SW-30 is best
for your vehicle. However, you can use
SAE IOW-30 if it’s going to be 0°F
(-1 8°C) or above. These numbers on an
oil container show its viscosity, or
thickness.
Do not use other viscosity oils,
such
as SAE IOW-40 or SAE 2OW-SO.
If you cannot find oils with the new
“starburst” symbol on the front of the
container,
you should look for and use
oils containing the following three things:
Ski or SG
“SH” or “SG” must be on the oil
container, either
by itself or combined
with other quality designations, such
as
“SHKD,” “SH,SG,CD,” “SGKD,”
etc. These letters show American
Petroleum Institute (API) levels of
quality.
SAE SW-30
Energy Conserving I1
Oils with these words on the container
will help you save fuel.
These three things are usually included in
1 doughnut shaped logo (symbol) on most
Zontainers.
If you cannot find oils with the
“starburst” symbol, you should
look for
lils with the doughnut shaped symbol,
;.ontaining the three things noted above.
NOTICE:
If you use oils that do not have either
the “starburst” symbol or
an API SH
or SG designation, you can cause
engine damage not covered
by your
warranty.
3M Goodwrench” oil (in Canada, GM
Engine Oil) meets
all the requirements
[or your vehicle.
. . .164 ProCarManuals.com
Page 215 of 258

Maintenance Schedule
Section A: Scheduled Maintenance Services (Cont.)
&planation of Scheduled
Maintenance Services
?allowing are explanations of the services
isted in Schedule
I and Schedule II.
he proper fluids and lubricants to use are
.isted
in Section D. Make sure whoever
rervices your vehicle uses these. All parts
should be replaced and all necessary
repairs done before you or anyone else
~ives the vehicle.
NOTE: To determine your engine’s
displacement and code, see
“Engine Identification” in the
Index.
ITEM
NO. SERVICE
1 -e Oil and Filter Change* -
Always use SH or SG Energy
Conserving
II oils of proper
viscosity. The
“SH” or “SG”
designation may be shown
alone, or in combination with
others, such as “SHKD,”
“SH,
SG, CD,” “SG/CD,” etc.
* An Emission Control Service.
ITEM
NO. SERVICE
2
3
4
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.
Tire Wheel Rotation and
Jnspectioq
- For proper wear and
maximum tire life, rotate your
tires following the instructions
in this manual. See
“Ties,
Inspection and 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.
Fan (Water Pump) Drive Belt
Servk
- Inspect and adjust if
necessary at
30,000 mile
(50 000 km), or 30 month
intervals. Replace the belt at
60,000 miles (100 000 km) and
120,000 miles (200 000 km).
-shaft Timin? Belt
Replacemeat”
- Replace every
60,000 miles (100 000 km) and
ITEM NO.
SERVICE
then inspect after 30,000 miles
(50 000 km).
Drain, flush and refill the system
with new or approved recycled
coolant conforming to
GM
Specification 182SM. Keep
coolant at the proper mixture
as
specified. See “Coolant” in the
Index. This provides proper
freeze and boil protection,
corrosion inhibitor level and
maintains proper 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
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
nressure cap.
5 Coolin? Sys&nSemice* -
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ProCarManuals.com
Page 226 of 258

Maintenance Schedule
Section D: Recommended Fluids & 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
Hydraulic Brake
System
Parking Brake Guides
Power Steering
System
Manual Transmission
Automatic
Transmission
FLUID/LUBRICANT
API service SH or SG Energy Conserving I1 oils of the proper viscosity. The “SH” or “SG”
designation may be shown alone or in combination with others, such as
“SH/CD,” or “SH, SG,
CD,” “SGKD,” 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.
Delco-Supreme 11’” Brake Fluid (GM Part No. 1052535 or equivalent DOT-3 brake fluid).
Chassis lubricant (GM Part
No. 1052497 or equivalent) or lubricant meeting requirements of
NLGI Grade
2, Category LB or GC-LB.
DEXR0N’-IIE Automatic Transmission Fluid.
SAE
75W-90 GL-4 (GM Part No. 12346074 Castrol‘ Syntorq GL-4 or equivalent) or SAE
75W-90 GL-5 Gear Lubricant.
DEXRON3-III
or DEXRON”-IIE Automatic Transmission Fluid.
225. . . ProCarManuals.com