Where is the Radiator drain on a 94 E420?
It is on the passenger side of the radiator at the extreme lower corner. Physically it looks like a red plastic turn knob with a side nipple for attatching a drain hose. It can be seen by getting on your back and look immediately behind the bumper and you will see an access cutout in the engine drain pan. If you pull it down ever so slightly, you will see the assembly. The Red drain knob faces the bumper and the nipple faces the front passenger tire.
Bucyrus



