oil viscosity PONTIAC GRAND PRIX 1998 Owners Manual

3800 or 3800 Supercharged Engine
Be sure to 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 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.
;"vi
.f
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 certifiel
for gasoline engines.
You should also use the proper viscosity oil for your
vehicle, as shown in the following chart:
d
6-16

As shown in the chart, if you have the 3100 engine,
SAE 5W-30 is best for your vehicle. However, you
can use
SAE 1OW-30 if it’s going to be 0°F (-18°C) or
above. These numbers on an
oil container show its
viscosity, or thickness.
Do not use other viscosity oils,
such as SAE 20W-50.
I RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
I SAE VlSCOSlTT GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER SYMBOL ---
I
SAE 3w-30 PREFERRED
COLD
WEATHER
DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED
3100 Engine
6-17

HOT
WEATHER
ImK
FOR THIS
--
RECOMMENDED SAE VISCOSITY GRADE EWGIWE OILS
FOR BEST FUEL ECONOMY AND COLD STARTINO, SELECT THE LOWEST
SA€ UlSCOSlll 6MDE OIL FOR THE EXPECTLD TEMPERATURE WE.
COLD
WEATHER
il UE I lbw-30
PREFERRED &ow 0°F (-1SoC)
DO NOT USE SAE 20W-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED
3800 or 3800 Supercharged Engine
As shown in the chart, if you have the 3800 engine,
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, 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 2OW-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.
6-18

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
Hydraulic Brake
System
Power Steering
System
Automatic
Transaxle
FLUIDLUBRICANT
Engine Oil with the American
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
Havoline@ DEX-COOL@ Coolant.
See “Engine Coolant” in the Index.
Delco Supreme 11
vv Brake Fluid
(GM Part No. 12377967 or
equivalent DOT-3 Brake Fluid).
GM Power Steering Fluid (GM
Part
No. 1052884 - 1 pint, 1050017 - 1
quart, or equivalent).
DEXRONw-I11 Automatic
Transmission Fluid. -
USAGE
Key Lock
Cylinders
Supercharger
Windshield
Washer Solvent
Chassis
Lubrication
Hood Latch
Assembly, Secondary Latch,
Anchor and Pivots, spring
Release Pawl
Hood and Door Hinges
Weatherstrip
Conditioning
FLUIDLUBRICANT
Multi-Pu ose Lubricant,
Superlube
% (GM Part
No. 12346241 or equivalent).
Supercharger Oil (GM
Part
No. 12345982). See “Supercharger Oil” in the Index.
GM Optikleenw Washer Solvent
(GM
Part No. 1051515) or
equivalent.
Chassis Lubricant
(GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements of
NLG1#2, Category LB
or GC-LB.
Lubriplate” Lubricant Aerosol (GM
Part No. 12346293 or
equivalent) or lubricant meeting
requirements of NLGI
# 2,
Category LB or GC-LB.
Multi-Pu ose Lubricant, Superlube
% (GM Part
No. 12346241 or equivalent).
Dielectric Silicone Grease (GM
Part No. 12345579 or equivalent).
7-19