E63 AMG fuel question

[xTVR]

Just got myself a nearly new E 63 AMG. Stonking car, love it. It's the 5.5 ltr twin turbo.
The MB dealer who supplied it said I should use super unleaded, but I am wondering if this is really necessary.
Question is, can I use regular unleaded without causing problems?
All comments welcome.
Thanks folks.

[xTVR]

Thank you both for your replies.
Rubbish petrol it is then!