Radiator Fluid Leak

Update - I FOUND my leak!
First I thought it was steering fluid or transmission fluid. Then I thought it was radiator fluid coming out of the cold level resevoir (my coolent is pink and when mixed with the oil and gunk it looked like steering fluid). Goes to show you that I wouldnt make a good mechanic.

It turns out and I am positive about this one, that it is leaking out of a tube that runs from the cold level tank to the Intake Manifold. I think I just need to replace the clamps. They are not tight enough.

Anyway, does anyone know what the hell that tube is for? Whey does coolent run up to the intake?

Coolant is sent to the intake manifold and the air plenum to keep the intake system from icing up and to improve emissions.