Selecting the Right Engine Oil
Selecting the right engine oil depends on both the proper oil specification and viscosity grade. See Recommended Fluids and Lubricants .
Specification
Use and ask for licensed engine oils with the dexos1™ approved certification mark. Engine oils meeting the requirements for the vehicle should have the dexos1 approved certification mark. This certification mark indicates that the oil has been approved to the dexos1 specification.

Notice: Failure to use the recommended engine oil or equivalent can result in
engine damage not covered by the vehicle warranty. Check with your dealer or service
provider on whether the oil is approved to the dexos1 specification.
Viscosity Grade
SAE 5W-30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W-30, 10W-40, or 20W-50. If in an area of extreme cold, where the temperature falls below −20°F (−29°C), an SAE 0W-30 oil should 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, always select an oil that meets the dexos1 specification or equivalent. See “Specification” earlier in this section for more information.
See also:
Shifting out of Park (Automatic Transmission)
This vehicle is equipped with an electronic shift lock release system. The shift lock release is designed to:
► Prevent ignition key removal unless the shift lever is in P (Park) with the shift ...
Features & Safety
The LaCrosse has yet to be crash-tested by the Insurance Institute for
Highway Safety. Standard safety features include antilock brakes, an electronic
stability system and six airbags. Seat-mounte ...
Underbody Maintenance
Use plain water to flush dirt and debris from the vehicle's underbody. Your dealer
or an underbody car washing system can do this. If not removed, rust and corrosion
can develop. ...
