Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
Cruising, Turning & Stopping
Ride comfort is still king at Buick, and it's a formula GM shouldn't change.
The LaCrosse leaves manhole covers and steel plates behind with the sort of
measured wump that you'll notice but won't ...
Door Ajar Messages
DRIVER DOOR OPEN
This message may display when the driver door is open. Close the door completely.
HOOD OPEN
This message will display when the hood is open. Close the hood completely.
LEFT REAR D ...
Other Warning Devices
If you carry reflective triangles, you can set them up
at the side of the road about 300 feet (100 m)
behind your vehicle. ...