What Kind of Engine Oil to Use
Look for these two things:
•
CI-4 or CH-4
Oils designated as API CI-4 or CH-4 are
recommended for your vehicle. The CI-4 or CH-4
designations may appear either alone, together or in
combination with other API designations, such as
API CI-4/SL.
These letters show American Petroleum
Institute (API) levels of quality.
Notice: If you use oil that does not have this
designation, CH-4, you can cause engine damage
not covered by your warranty.
Notice: Use only engine oils that have one of these
designations CI-4 or CH-4 for the DURAMAX™ diesel
engine. Failure to use the recommended oils can
result in engine damage not covered by your
warranty.
•
SAE 15W-40
As shown in the viscosity chart, SAE 15W-40 is
best for your vehicle. However, you can use
SAE 10W-30 at temperatures above 0°F (
−
18°C).
When it is very cold, below 0°F (
−
18°C), you should
use SAE 5W-40 to improve cold starting.
These numbers on the oil container show its
viscosity, or thickness. Do not use other viscosity
oils such as SAE 10W-40 or SAE 20W-50.
This doughnut-shaped
logo (symbol) is used on
most oil containers to
help you select the correct
oil. It means that the oil
has been certified by
the American Petroleum
Institute.
You should look for this on the oil container, and use
only those oils that display this logo.
GM Goodwrench
®
oil of the recommended viscosity
grades meets all the requirements for your vehicle.
5-28
Summary of Contents for kodiak 2004
Page 5: ...These are some examples of symbols you may find on your vehicle v...
Page 113: ...NOTES 3 3...
Page 114: ...Instrument Panel Overview 3 4...
Page 170: ...NOTES 3 60...
Page 258: ...Single Axle Models 5 52...
Page 309: ...Engine Drive Belt Routing 8 1L Engine DURAMAX Diesel Engine Caterpillar Diesel Engine 5 103...
Page 310: ...NOTES 5 104...
Page 342: ...Date Odometer Reading Serviced By Maintenance Record 6 32...