That coolant has the nasty look of neglect or you've got cross contamination issues. Any problems with the transmission or overheating? I can't help but think there may be oil or tranny fluid in your coolant, hard to tell from the pics but that doesn't look so good. Is it thick and goopy or not viscous at all? if it's chunky you need to consider the head gasket is going or gone. Take care of that, it's a sportline.

best of luck

I think the rad drain is in the front, pass side where you access the tow hook. Red cap. The overflow does feed into the wheel well behind the overflow tank and drains out there

What was the diagnosis?

__________________
1991 190E 311K [Brilliant Silver/Black MBTEx] -retired
1996 E300 315K [Black/Grey MBTex]

Want to put a tank in the trunk for WVO/SVO in the E300 Need to find a place to store my OIL!
Still procrastinating about the biodiesel/WVO
Made some biodiesel but so afraid to pour it all in - I've added some and think I'll supplement my fuel to see how I make out

Made some biodiesel but the process scares me - methanol fumes are not your friend! Need to do this outside.