Radiator issue

[wizkid2003]

Hi all.I'm looking for help with a radiator problem on a E320. I want to add rad seal but don't know where it should go.Should I just add it to the coolant?
Ok.Forget this request.I think I have this shuddering problem that I am reading about in other threads..
I've been told it's not too bad at the moment so whats the best plan of action?

 

[Smiley]

Do not add rad seal; take car to MB dealer for the glycol test - coolant in the ATF. Then take it from there - dont drive the car more than you have to.

 

[Roger Jones]

If you have to replace the radiator, a Nissens (made in Denmark) from GSF costs a third of the MB dealer price for what's presumably a Behr.