There is a special socket from Mercedes that works nicely on the filter. It came with my car when I bought it. Be happy to provide the part number if you want it.

I too was concerned about going 10K between oil changes on this diesel when I got it. However, I have done a couple of oil analyses at 10K and the report came back very good - the oil still had plenty of life left in it. Believe the 10K interval - it works.

As Terry says, the spec for the oil is 229.3/229.5. Mobil 1 0W40 meets it. Mobil 1 Turbodiesel/truck 5W40 or Delvac doesn't.

__________________
Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles