1998 PONTIAC BONNEVILLE oil viscosity

Oil Pressure Gage
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 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. On vehicles with the optional
DIC,
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 A CAUTION:
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 serviced.
I NOTICE: I
Damage to your engine from neglected oil
problems can be costly and
is not covered by
your warranty.
2-71
. . ..

What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identified
by looking for the "Starburst" symbol. This symbol
indicates that the oil has been certified by the American
Petroleum Institute
(API). Do not use any oil which
does not carry this Starburst symbol.
i A
If you change your own oil,
be sure you use oil that has the Starburst symbol on the
front of the oil container.
If
you have your oil changed
for you, be sure the oil put
into your engine is
American Petroleum
Institute certified for
gasoline engines.
You should
also use the proper viscosity oil for your
vehicle, as shown in the following chart:
RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTIN& SELECT THE LOWEST
SA€ VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE RAWGE.
HOT
WEATHER 7
"F
t 100 -
+80-
+60-
t40-
t 20 -
0-
7
"C
t3a
t
27
t 16
+I
-1
- 18
cou)
WEATHER
WOK
FOR THIS
SYMBOL
DO NOT USE SM 2QW-50 OR ANY OTHER GRADE OIL NOTRECaYlENMD
6-15

As shown in the 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 (1 6" C) before your next oil
change. When it's very cold, 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 20W-50.
NOTICE:
Use only engine oil with the American Petroleum
Institute Certified For Gasoline Engines
"Starburst" symbol. Failure to use the
recommended
oil can result in engine damage
not covered by your warranty.
GM Goodwrench@ oil meets all the requirements for
your vehicle.
If you are in an area where the temperature falls below
-20°F (-29"C), consider using either an SAE 5W-30
synthetic oil or an SAE OW-30 oil. Both will provide
easier cold starting
and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Don't add anything to your oil. Your dealer is ready to
advise if you
think something should be added.
When to Change Engine Oil
If any one of these is true for you, use the short tripkity
maintenance schedule:
0
0
0
0
0
Most tsips are less than 5 to 10 miles (8 to 16 lun).
This is particularly important when outside
temperatures are below freezing.
Most
trips include extensive idling (such as fiequent
driving
in stop-and-go traffic).
Most trips are through dusty areas.
You frequently tow a trailer or use a carrier on top of
your vehicle.
The vehicle
is used for delivery service, police, taxi
or other commercial application.
Driving under these conditions causes engine oil to
break down sooner.
If any one of these is true for your
vehicle,
then you need to change your oil and filter
every
3,000 miles (5 000 km) or 3 months -- whichever
occurs
first.
6-16

Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE
Engine Oil
Engine Coolant
FLUID/LUBRICANT
Engine Oil with the American
1 Petroleum Institute Certified For
Gasoline Engines “Starburst”
symbol of the proper viscosity. To
determine the preferred viscosity
for your vehicle’s engine, see
~ “Engine Oil” in the Index.
50/50 mixture of clean water
(preferably distilled) and use only
GM Goodwrench@ DEX-COOL@
or Hwoline@ DEX-COOL@
Coolant. See “Engine Coolant” in
1 the Index.
USAGE
Hydraulic Brake
System
Parking Brake Cable Guides
Power Steering
System
Automatic
Transaxle
~ ~ ~~
Key Lock
Cylinders
Supercharger
FLUIDLUBRICANT
Delco Supreme 11 @ Brake Fluid
(GM Part No. 12377967 or
equivalent
DOT-3 Brake Fluid).
Chassis Lubricant (GM
Part
No. 12377985 or equivalent) or
lubricant meeting requirements of
NLGI
# 2, Category LB or
GC-LB.
GM Power Steering Fluid (GM
Part No. 1052884 - 1 pint,
1050017 - 1 quart, or equivalent).
DEXRON@-III Automatic
Transmission Fluid.
Multi-Pu ose Lubricant,
Superlube
% (GM Part
No. 12346241 or equivalent).
Supercharger Oil (GM Part
No. 12345982). See “Supercharger
Oil” in the Index.
7-37