Originally Posted by The Space Monkey

Background: Its my 1997 Volvo 850 GLT Turbo, I bought it used upstate Illinois. Drivin it everyday for about 6 years? The Catalytic Converter never got replaced, and latter burnt out my exhaust and turbo. I replaced all of that and had a happy Volvo. Not to long ago I lost my ability to step on it, well when i floor it, it seems to stutter? I just kept on driving it.

Problem: It generated a small coolant leek from the radiator, very small. Just filled it with fluids if needed (this is all in the last month-I planned to take it to my mechanic to fix the leak when i had the funds) Anyways Driving down the road steam starts coming out of the hood, about the time i find a good place to pull over it goes POOFFFF...HISSSSSS. I put it in neutral, shut the engine off and pull over. I open the hood holding my breath, whilst smelling burnt coolant. Though when the steam clears I find my engine bay covered in a Light Brown Sludge (Pictures Below) It smells like Antifreeze and looks like Antifreeze mixed with some Oil. The source was all from the exit hose on the radiator. In the middle of no where i was forced to drive it back home ( a good length trip accross town) I still had go power, and it didnt overheat at all.

Flickr Pics (read descriptions to): Flickr: TheSpaceMonkey9's Photostream

How did the coolant ever get mixed with oil also?? or is it coolant and oil?
Thanks for the Help, it is needed greatly!