Engine Oil
For diesel engine vehicles, see “Engine Oil” in the Duramax Diesel Supplement.
To ensure proper engine performance and long life, careful attention must be paid to engine oil.
Following these simple, but important steps will help protect your investment:
• Always use engine oil approved to the proper specification and of the proper viscosity grade. See “Selecting the Right Engine Oil” in this section.
• Check the engine oil level regularly and maintain the proper oil level. See “Checking Engine Oil” and “When to Add Engine Oil” in this section.
• Change the engine oil at the appropriate time. See Engine Oil Life System on page 10‑10.
• Always dispose of engine oil properly. See “What to Do with Used Oil” in this section.
See also:
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Navigation System
If the vehicle has a navigation system, there is a separate navigation system manual that includes information on the radio, audio players, and navigation system.
The navigation system provides detai ...
Additional Maintenance and Care
Your vehicle is an important investment and caring for it properly may help to
avoid future costly repairs. To maintain vehicle performance, additional maintenance
services may be required. It is ...