Leaking engine mounts?!?? There should be a 13 mm (about a 1/2 inch) gap between the mount frame and the chassis. You can check this with a ruler and a flashlight. If it's lower than this then your mounts are probably gone.
Go here for further details http://www.mercedesdot.com/motor%20mount.htm
If its not this then you may have another problem.
[This message has been edited by yal (edited 10-19-2000).]