At first the rubber o ring was broke so I went and got a new one. Now it is still dripping from the little spout no matter how the "screw" is in there! What do I do? Oh and how do I get the air out of the system? Thanks!!

 

if it were me i would use a little bit of silicon but be careful not to get it in the radiator , just around the fitting. and there is bleed screws up top.

 

just get a used valve from a radiator shop. usually they give it to you for free. but sometimes they want a small fee. i bought two from a locar radiator shop. one brand new, and one used for $2.

hope this helps