I just changed mine at a MB tech session.

The stuff that came out was a dark brown, clear but dark. The tech who was wating me do it said it did not look bad for a car with 140k on it. The stuff that I put in was standarf MB diff fluid. It was light amber like you said your's was. I did not smell anything from the old stuff or the new.

Not sure why the old stuff was read and not really sure what you mean by "head". Do you mean foam like the head on a beer? No idea why that would happen either.

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2014 C250 21,XXX my new DD ** 2013 GLK 350 18,000 Wife's new DD**

- With out god, life is everything.
- God is an ever receding pocket of scientific ignorance that's getting smaller and smaller as time moves on..." Neil DeGrasse Tyson
- You can pray for me, I'll think for you.
- When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours.