does it matter which way ?

Supershafts said

What radiator in what car have you seen the HOT enter at the bottom and flow up?

Click to expand...

I posted this and left the house and realized the radiator I was thinking about was a unique race application and not the average car.I just now got back to the computer.The hot water enters the top and is cooled by the fan and falls to the bottom which helps the flow in the system.

Sorry if my other post confussed anyone I was in a hurry and it hit me as I was leaving.