Diesel Engines - Chevrolet 1995 Tahoe Owner's Manual

DIESEL ENGINES
I
RECOMMENDED SAE VISCOSITY 6RADE ENGINE OILS
SELECT THE SAE ORADE OIL BASED O N
THE
EXPECTED TEMPERATURE RANGE
BEFORE NEXT 011 CHANGE
HOT
WEATHER
/ O F
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.
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