* The Mercedes-Benz 229.5 SAE 5W-40 synthetic motor oil is the recommended choice for the Mercedes-Benz E320.
* As an alternative, you may also use the Mercedes-Benz 229.5 SAE 0W-40 synthetic motor oil.
For diesel engines:
* The Mercedes-Benz 229.51 SAE 5W-30 synthetic motor oil is the recommended choice for the Mercedes-Benz E320 CDI.
When selecting an oil for your vehicle, always refer to the owner's manual for the exact specifications and recommendations from the manufacturer.