1998 Pontiac Firebird Owner's Manual - Page 268
1998 Pontiac Firebird Manual
Page 268 highlights
RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST SAE VlSCOSlTV GRADE OIL FOR THE EXPECTED TEMPERATURE RANGE. HOT WEATHER LOOK FOR THIS SYMBOL As shown in the chart, if you have the 5.7L engine, SAE 5W-30 is best for your vehicle. However, you can use SAE 1OW-30 if it's going to be (-18°C) or 0°F above. These numbers on oil container show its an viscosity, or thickness.Do not use other viscosityoils, such asSAE 20W-50. PREFERRED SAEw i3 0 WEATHER DONOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED 5 7 V8 Engine .L 6-15
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 |
RECOMMENDED SAE
VISCOSITY
GRADE ENGINE
OILS
FOR
BEST FUEL ECONOMY AND COLD STARTING, SELECT THE
LOWEST
SAE VlSCOSlTV GRADE OIL
FOR
THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER
LOOK
FOR
THIS
SYMBOL
SAE
iw
-30
PREFERRED
WEATHER
DONOT
USE
SAE
2OW-50
OR
ANY
OTHER
GRADE
OIL NOT RECOMMENDED
5.7L
V8
Engine
As
shown
in
the
chart,
if
you
have
the
5.7L
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.
6-15