Coolant leak from upper radiator hose, 5sfe Options

[ILoveMySilly97]

So I've been having issues with my cooling system for a long while now. It just never bothered me til now. I took a look at it after my bro drove it back from school. Which was about 20 min away most of it was on the highway. I popped open the hood just to look around and check my fluid levels since the engine is warm. I noticed it started leaking AGAIN at the upper radiator hose. It's leaking through the inner threads of the radiator hose. Now the side that connects to the engine. The color of the coolant that was leaking was brownish? I'm thinking it might be rust. The last cooling system flush I did was almost a year ago. At that time I had replaced thermostat, thermostat housing, top and bottom radiator hose, both ECT sensors, radiator cap, radiator and the fan temp sensor. My thermostat is designed to open at 175 degrees Fahrenheit. I know it opens because when I touched my bottom radiator hose it was warm but my top radiator hose was hot. I'm just wandering why it'll leak in the inner thread? Only possible answer is possible over pressure? Blockage in the engine somewhere? Any suggestions besides doing another cooling system flush?

[ILoveMySilly97]

I'm running OEM upper rad hose and OEM rad cap. I'm thinking their's a blockage somewhere in the engine but last time I flushed it out. Only thing that came out was the green coolant then straight clean clear water.

Also noticed when I removed the upper hose. The end that connects to the rad outlet. There were brownish things around it AGAIN. I don't know what it is? Could it be something that's from inside the hose itself? Or is it actually from the engine? I drained the radiator a bit from the drain plug and the coolant is clear green. Not oily/milky or any debris.

This post has been edited by ILoveMySilly97: Aug 24, 2013 - 2:28 PM