Oil in coolant update

[Mr. BILL]

The 300E I recently purchased had just had the head gasket replaced and the valve train re-done. I got concerned the other day when I opened the cap on the recovery tank and saw that milkey brown crud in there.

I called the guy who did the work and he said it's fairly common for it to collect there and he'd flush it for me if I brought it in. I decided to take care of this myself since he'd not used MB coolant.

I removed the recovery tank and after a couple dozen attempts to flush it clean, I decided to buy a new one. I was encouraged when I drained the radiator and block that the coolant showed no signs of contamination. So, I flushed the system and re-filled it with MB coolant. The next day, only a tiny dab of the brown coolant was stuck on the bottom of the cap. Today, there was nothing, so I think I got it sorted out.