I notice a steady dripping of coolant coming from the driver's side corner of the radiator support after being driven. After I let the car cool down, no more dripping, and the radiator is still full, coolant recovery bottle is empty (which is normal, got a new one coming in the mail). The car has a 180 Tstat in it and is running just under 220 without the AC on. Both fans are spinning. If the radiator was bad, wouldnt it be dripping all the time?? Could there be an air bubble somewhere in the system?

The radiator support is perfectly dry except in that one corner. Only thing on that side is the upper radiator hose which is dry all the way to the bottom.

I can't figure it out.

 

Sounds like a leak from the coolant recovery system.

 

" Rent " a cooling system pressure tester from Autozone, Oreileys, etc.

The leak will be more prevailant under pressure.
Follow the instructions if there are any.
If not, ask the rep to go over it with you.
It can also test the rad cap.

( edit )
Doh!!!
Even said a new one is on the way!!
Sorry about that!!

 

On the Driver's side?? Recovery bottle is on the passenger side.

 

Depends on where the leak is, could be leaking and running along a seam and dripping on the other side or running along the support to that corner. In any case if it was a hole in the radiator it would be leaking anytime it got warm wouldn't need to get hot.

 

That is whats weird. It only leaks when hot.

 

When is hot, it pressurize the system. It will came out at where it leak even is small.
If you use the leak down tester, you will see the pressure drop depend how worst is the leak.
Recovery tank is empty, couple situation: 1. coolant system has air 2. coolant system is leaking
both situation will keep pulling coolant from the tank to recover the system that is not enough coolant.