Date registered: Dec 2005
Vehicle: 222.132 & 221.122 & 213.050 & 906.633
Mentioned: 3 Post(s)
Quoted: 39 Post(s)
This time the parts diagram isn't showing the location too well and I did not find a figure for the 163.154 but this attached photo should be from a W220 and should be pretty similar to your ML. I believe it confirms that you did find the correct cap and oil reservoir.
By the way, there may be an issue with the oil power steering hose, leaking at the front of the car, close to the radiator. I don't want to put the document here, if interested, PM an email address and I'll send the document.
Last edited by Diesel Benz; 01-23-2008 at 10:46 PM.