Selecting the right engine oil depends on both the proper oil specification and viscosity grade.
See Recommended Fluids and Lubricants.
Specification
Ask for and use engine oils that meet the dexos1 specification.
Engine oils that have been approved by GM as meeting the dexos1 specification are marked with the dexos1 approved logo. See www.gmdexos.com.

| Caution Failure to use the recommended engine oil or equivalent can result in engine damage not covered by the vehicle warranty. |
Viscosity Grade
Use SAE 0W-20 viscosity grade engine oil for the LYX 1.5L turbo engine.
Use SAE 5W-30 viscosity grade engine oil for the LTG 2.0L turbo engine. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below −29 C (−20 F), an SAE 0W-30 oil may be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures.
When selecting an oil of the appropriate viscosity grade, it is recommended to select an oil of the correct specification. See "Specification" earlier in this section.
When to Add Engine Oil
Selecting the Right Engine Oil
(Diesel Engines)Camshaft Position Actuator Removal - Right Side Intake Valvetrain Camshaft
Caution:Refer toTorque Reaction Against Timing Drive Chain Caution.Use an open wrench on the hex cast into the camshaft in orderto prevent engine rotation when loosening the camshaft positionactuator bolt.Remove the right intake camshaft position actuatorbolt-(1).Remove the right intake camshaft pos ...