1994 E350 , coolant line is leaking by the radiator (lower). Also the radiator loses coolant at same same time but no signs of it leaking. Question, does the rubber hose come off or do I have to replace the whole tube? And why would that effect the radiator level? Do I need a new radiator besides the coolant line? It's a 7.5lt 460. E4OD

 

It depends where it is leaking.
Is it the tubing, where connection is fixed to radiator, or where line is fastened/connected to the radiator fitting ?

Might be a good idea to use a cooling system pressure tester to verify EXACTLY where leak is.

 

I ordered a pressure kit and will be here Tuesday. As far as the tubing, it's by the connection at the radiator.Will clean it up today and see if I can locate it. Thanks for your answer!

 

There is a cooling spiral inside the radiator that transfers trans fluid heat to cooling system to be removed by normal cooling system function.

If you need to have the radiator removed for repair, they will pressure test that trans cooler also to verify no trans fluid can get into cooling system.

Trans fluid press in area of 75 psi, cooling system press in area of 15 psi,