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Oil Pressure Gage (OPTION)
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. Oil pressure may vary with engine
speed, outside temperature and oil
viscosity, but readings above the red
warning zone indicate the normal
operating range.
A reading in the red zone may be caused
by
a dangerously low oil level or other
problem causing low oil pressure. The
CHECK GAGES light will go on and a
warning chime will sound, if you have
this option.
Driving your vehicle with low oil
pressure can cause extensive engine
damage.
I.. I10
1
Don’t keep driving if the oil
pressure
is low. If you do,
your engine can become so hot that
it catches fire. You or others could
be burned. Check your oil as soon
as possible and have your vehicle
rviced.
I
I
Damage to your engine from
neglected oil problems can be
costly and is
not covered by your
warranty.
Voltmeter (OPTION)
Unless you have the supercharged
engine, you may have a voltmeter.
When the engine is running, the gage shows the condition
of the charging
system. Readings outside the red
warning zone indicate the normal
operating range.
Readings
in the red warning zone
indicate a possible problem in the
electrical system. The
CHECK GAGES
light will also come on, and a warning ,
chime will sound. Have your vehicle
serviced immediately.
When your engine is not running, but
the ignition is on (in the
Run position),
the gage shows your battery’s state
of
charge in DC volts.
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Page 233 of 322

Service tS Appearance Care
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
“SGICC,”
“SGICD,” “SF, SG, CC,”
etc. These letters show American
Petroleum Institute (API) levels of
1 quality.
If you use oils that don’t have the
“SG” designation, you can cause
engine damage not covered
by your
warranty.
’,”,, .
For best fuel economy and cold starting,
select the
lowest SAE viscosity grade oil ’;,:;:?,:!
for the expected temperature range,:?$’:&,:, 4 , ,,
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 20W-50 OR ’ i’
,,
SAE low-30
As shown in the 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°F
(16°C) before your next oil change.
When it’s very cold, below
0°F
(-18”C), you should use SAE 5W-30.
These numbers on an oil container
show its viscosity, or thickness. Do
not use other viscosity
oils such as
SAE 1OW-40 or SAE 20W-50.
Energy Conserving 11
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
Pontiac dealer is ready to advise if you
think something should be added.
... 232
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Page 285 of 322
![PONTIAC BONNEVILLE 1993 Owners Manual Maintenance Schedule
Section A: Scheduled Maintenance Services [cant.]
Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule I
and Schedule PONTIAC BONNEVILLE 1993 Owners Manual Maintenance Schedule
Section A: Scheduled Maintenance Services [cant.]
Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule I
and Schedule](/manual-img/50/58376/w960_58376-284.png)
Maintenance Schedule
Section A: Scheduled Maintenance Services [cant.]
Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule I
and Schedule II.
ITEM
NO. SERVICE
1
2
Engine Oil and Filter Change-Always use SG
Energy Conserving II 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 the Index under
Engine Oil.
Chassis Lubrication-Lubricate the transaxle shift
linkage, parking brake cable guides, underbody
contact points and linkage. Lubricate the front and
rear suspension and steering linkage. 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.
ITEM
NO. SERVICE
3
4
Throttle Body Mounting Bolt Torque-Check
the torque
of the mounting bolts and/or nuts.
Tire and Wheel Rotation and Inspection-For
proper wear and maximum tire life, rotate your
tires following the instructions in this manual. See
the
Index under fires, Inspection & Rotation.
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.
a The US. Environmental Protection Agency has determined that the failure to pe$orm this maintenance item will not nullifL the emission warranty or
limit recall liability prior to the completion of vehicle useful life. General Motors, however, urges that all recommended maintenance sewices be
pe$ormed at the indicated intervals and the maintenance be recorded in Section
E: Maintenance Record.
m.. 284
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Page 292 of 322

Section I: Recommended Fluids & Lubricants
NOTE: Fluids and lubricants identified below by name, part number or specification may be obtained from your GM dealer.
I Engine Oil
Hydraulic Brake System
Parking Brake Guides
t
Power Steering System
Automatic Transaxle
Supercharger
FWID/WBRICANT
GM Goodwrench Motor Oil or equivalent for API service SG Energy Conserving II oils of the
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, see the
Index under Engine Oil.
A 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
ll@ 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). ~~~ ~~
Supercharger Oil (GM Part No. 12345982).
~~~ ~~
291
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