The Mercedes-Benz Owner's Manual states that there is a list of approved engine oils somewhere (online I assume). Does anyone know where I might find this list, or what engine oils are approved for use in the GL 320 CDI?

Thanks in advance.

Any motor oil suitable for diesels will work just fine. The oil does not know a Mercedes from a VW from a Cummins. (offline would have been my assumption).

I don't care what MB says, I use Rotella T in my diesel Mercedes.