Dirty water in my radiator, what to do? Options

[Ugglan]

Hi,
I need some help with my radiator, the water is pretty dirty. I think I might go to my parents tomorrow and try to flush the system but have anyone else had this problem?

The brown stuf is not hard, rather like soft mud or wet sand. No samll stones or anything.
Any ideas of what it is and why it is there and what to do?








Tanks
//Johan

This post has been edited by Ugglan: May 23, 2009 - 7:25 AM

[Spider77]

Yeah, if you got something like prestone radiator flush, you need to do that. But as thick as that stuff looks, i would take it to a shop and have them clear it all out. If you flush it with water, run the car w/heater on full for like 10 min, drain, and proceed to repeat the process till it runs clear. You might want to also get a new t-stat while your at it, no telling how much of that crap is all up on it.