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:
Maintenance Replacement Parts
Replacement parts identified here by name, part number, or specification can
be obtained from your dealer.
...
Interior Quality & Comfort
The CTS' cabin quality has held up well since this generation first hit the
road as a 2008 model, and it's still competitive against newer entrants like the
535i and M37. Among the highlights are ...
Remote Lock/Unlock/Start
Select Remote Lock/Unlock/Start and the following will be displayed:
- Unlock Feedback (Lights)
- Locking Feedback
- Door Unlock Options
- Passive Door Lock
- Passive Door Unlock
- Memory Remo ...