Matt,

If your oil cooler lines have never been replaced, you may want to consider doing that once you get them loose. A MB factory rep once told me to replace mine about every 75,000 miles because if they rupture, your engine oil will be dumped on the highway in an instant and your engine ruined before you realize anything is wrong.

For what it's worth.

__________________
Ted
1979 240D
165,000 miles