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?

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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.

MB recommends a coolant change every 30k, and i'd guess your car went a LOT longer than that in between.

Use the MB coolant, it is recommended, and after the flush and refill and pressure test, maybe a new thermostat/radiator cap would be a good investment, and make sure all the hoses are good, including the bypass hose.

Your car is the very desirable Sportline model, with uprated suspension and seats, not a run of the mill 190. The 2.6 motor puts out a robust 185 hp, so it's not the fastest ride in town and you won't smoke every "Type R" around, but it is very well balanced and handles extremely well,

AND, it is a very good looking car, so get out there and CLEAN THOSE DIRTY WHEELS and wash the car!!!

The 190 Revolution website is full of great information, and if you look in the website gallery for cars of the month, you can get a good idea of how stunning yours could look.

A Sportline 2.6 is about as good as you can get with the 190, except for the EVO Cossie.

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)