1999 Chevrolet Corvette Owner's Manual - Page 264
1999 Chevrolet Corvette Manual
Page 264 highlights
yellowblue D SAE 5W-30 As shown in the viscosity chart, SAE 5W-30 is best for your vehicle. However, you can use SAE 10W-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. Oils meeting these requirements should also have the "Starburst" symbol on the container. This symbol indicates that the oil has been certified by the American Petroleum Institute (API). You should look for this on the oil container, and use only those oils that are identified as meeting GM Standard 4718M and have the Starburst symbol on the front of the oil container. 6-14
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yellow
blue
6-14
SAE 5W
-
30
As shown in the viscosity chart, SAE 5W
-
30 is best
for your vehicle. However, you can use SAE
10W
-
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.
Oils meeting these
requirements should also
have the “Starburst” symbol
on the container.
This symbol indicates that the oil has been certified by
the American Petroleum Institute (API).
You should look for this on the oil container, and use
only
those oils that are identified as meeting GM
Standard 4718M and have the Starburst symbol on the
front of the oil container.