No rings, just bad streaks/haze.

I pulled the tank and cleaned it out. I cant tell if it's oil or what, but it does have a "film" that you have to wash off your hands. The tank had a lot of sediment in it. The heater coil looks like crap, and the black thermostat thingy has a crack. I pulled it all out and bypassed the tank heater... when I removed one of the black rubber lines, I got nasty black oil like stuff all over my hands. So it's possible the rubber is being broken down.

Broke the washer motor, like always, so I need to order another one. I'll also replace the lines to the jets as well.

Still no sign of oil and antifreeze commingling. This weekend I will change the oil and look for water.

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08 R320 CDI current

Past
95 E420
87 300D Turbo 5spd
90 300TE
83 300SD
85 300TD
92 400E
85 190D