Chevrolet STFF6S Automobile User Manual


 
DIESEL
ENGINES
I
RECOMMENDED
SAE
VISCOSITY
6RADE
ENGINE
OILS
SELECT
THE
SAE
ORADE
OIL
BASED
ON
THE
EXPECTED TEMPERATURE RANGE
BEFORE
NEXT
011
CHANGE
HOT
WEATHER
/OF
c
+
100
+BO
-
-
+32
--
0
-9
-20
-
+
38
+
18
SAE
15W-40
PREFERRED
above
0°F
(-
1
8°C)
SA€
1
OW-30
-
SA€
I
30
COLD
WEATHER
DO
NOT
USE
SAE
2OW-50
OR
ANY
OTHER
GRADE
OIL
NOT
RECOMMENDED
SAE
15W-40
As
shown
in
the viscosity chart,
SAE
15W-40
is best for your vehicle.
However, you can use
SAE
1OW-30 if it's going to be colder than
32°F
(0OC)
before your next
oil
change. When it's very cold, below
0°F
(-1
8OC),
you
should use
SAE
1
OW-30
to
improve cold starting.
Also,
SAE
30
may
be
used at temperatures above freezing, 32°F
(OOC).
These numbers
on
the
oil
container show
its
viscosity, or thickness.
Do
not
use other viscosity
oils
such
as
SAE
IOW-40 or
SAE
2OW-50.
6-23