oil viscosity CHEVROLET SUBURBAN 1993 Owners Manual

Featurns & Controls
30
Oil Pressure Gage
Standard Ciusier
Tachometer
Cluster
K2116
K2117
The oil pressure gage shows the engine oil pressure in psi (\
pounds per square inch) when the engine
is running. Canadian vehicles indicate pressure
in kPa (kilopascals). Oil pressure may vary with engine speed\
, outside
temperature and
oil viscosity, but readings above the low pressure zone
indicate the normal operating range.
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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.
Energy Conserving II
Oils with these words on the container will help you save fuel.
This doughnut-shaped logo (symbol) is used on most oil contai\
ners 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 Addifives:
Don't add anything to your oil. Your GM 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).
It's below freezing outside and most trips are less than 10 miles (16 km).
The engine is at low speed most of the time (as in door to door
You tow a trailer often.
Most trips are through dusty places.
The vehicle is frequently operated off-road. delivery, or in stop-and-go
traffic),
If any one of these is true for your vehicle, then you need to change your oil
and filter every 3,000 miles (5000 km) or 3 months-whichever comes first.
Vehicles with Light Duty Emissions (8500 GVWR or less).
If none of them is true, change the oil every 7,500 miles (1 2 500 km) or 12
months-whichever comes first. Change the filter at the first oil change and at
every other oil change after that.
Vehicles with Heavy Duty Emissions (8501 GVWR or more).
If none of them is true, change the oil every 6,000 miles (1 0 000 km) or 12
months-whichever comes first. Change the filter at the first oil change and at
every other oil change after that if mileage determines when you change your
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Scheduled Maintenance Services
Explanation Of Scheduled Maintenance Services
Below are explanations of the services listed in the maintenance charts.
The proper fluids and lubricants to use are listed in this section. 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 ve\
hicle.
1. ENGINE OIL AND OIL FILTER CHANGE* -ALWAYS USE SG OR
SG/CE QUALITY, ENERGY CONSERVING II OILS OF THE PROPER
VISCOSITY. To determine the preferred viscosity oil for your vehicle’s
engine (e.g. SAE 5W-30 or
10W-30), see “Engine Oil” in the Index.
2. CHASSIS LUBRICATION -Lubricate the front suspension, king pin
bushings, steering linkage, transmission, and transfer case shift\
linkage,
parking brake cable guides, propshaft splines
(2 wheel drive), brake
pedal springs, and clutch pedal springs at the intervals specif\
ied.
If you have a 3500 HD, lubricate the king pins and king pin bushings
every
1,500 miles (2500 km) for Maintenance Schedule 1, or every 3,000
(5000 km) for Maintenance Schedule 2.
Ball joints and king pin bushings should not be lubricated unl\
ess their
temperature is
10°F (-12”C), or higher. When the weather is cold, let
them warm up before lubrication
or they could be damaged.
Also, be sure to check all the vehicle fluid levels at this time.
3.
CLUTCH FORK BALL STUD LUBRICATION -Lubricate the clutch fork
ball stud through the fitting on the clutch housing. Lubricant \
must be
added “sparingly” to the fitting, as only.
0066 Ib. (.003 kg) is required to
lubricate the ball stud surface. Do not add lubricant more often than the
intervals in the Maintenance Charts.
Too much lubricant will damage
the clutch
assembly.
4. ENGINE IDLE SPEED ADJUSTMENT (DIESEL ENGINES)* -Adjust to
the specifications shown on the underhood label. You must use
calibrated test equipment.
5. COOLING SYSTEM SERVICE* -Drain, flush and refill system with new
coolant. See “Engine Coolant” in the Index for the proper\
coolant and
mixture
to use in your vehicle.
Also inspect the hoses and replace them if they i cracked, swollen, or
deteriorated. Tighten all hose clamps (except consrant tension clamps).
Remove debris and clean the outside of the radiator and air c\
onditioning
condenser. Wash the radiator neck.
To ensure proper operation, pressure
test the radiator and cap.
* An Emission Control Service
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Recommended Fluids & Lubricants
NOTE: Fluids and lubricants identified below by name, part number or
specification may be obtained from your GM Dealer.
Engine Oil
IEnginelant
II
Hydraulic Clutch System
Hydraulic Brake Systems
Parking Brake Cables
(
(
Power Steering System (
t
Manual Steering Gear
Automatic Transmission
r
Manual Transmission:
a. 5-Speed with Low Gear
1 b. 5-Speed without Low Gear
I
FLUID/LUBRICANT
;M Goodwrench Motor Oil or equivalent for API Service SG
)r SGiCE of the recommended viscosity.
ilixture
of water and a good quality ethylene glycol base
intifreeze conforming to
GM-6038-M (GM Part No. 1052103).
iydraulic Clutch Fluid
(GM Part No. 12345347 or equivalent).
lelco Supreme 11
8 brake fluid (GM Part No. 1052535 or
2hassis grease meeting requirements
of NLGl Grade 2,
2atagory LB or GC-LB (GM Part
No. 1052497).
3iM Power Steering Fluid (GM Part No. 1050017) or
2quivalent conforming to
GM spec 9985010.
3M Lubricant (GM Part No. 1052182) or equivalent.
IEXRON@ IIE Automatic Transmission Fluid (GM Part No.
1051 855). lOT-
3).
a. CastrolCo
Syntorq or equivalent (GM Part No.
b. Standard Transmission Fluid (GM Part No. 12345349). 12346074).
Differential:
a.
Standard (Saginaw) Front
and Rear Axle
I
b. Locking
Transfer Case a. SAE-80W-90 gear lubricant (GM Part
No. 1052271).
b.
SAE-80W-90 gear lubricant (GM Part No. 1052271).
DexronB
IIE Automatic Transmission Fluid (GM Part No.
12345881 ).
IGas- IL
Weather Strips I:
?as Line De-leer (GM Part No. 1051516).
Spray-ASqueek (GM Part No. 1052277).
Column Shift, Transfer Case Shift Lever, and Propeller Shaft.
Clutch Fork Ball Stud
(
(
>hassis grease meeting requirements of NLGl Grade 2,
;ategory LB or GC-LB
(GM Part No. 1052497).
zhassis grease meeting requirements
of NLGl Grade 2,
;ateaorv LB or GC-LB (GM Part No. 1052497).
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