The new cars with the "15 year" coolant (note quotes ) have dark blue-green coolant. My 2006 211 car has it. Almost looks like someone added the windshield fluid to the coolant bottle.

- JimY

The factory coolant on late model MB's is blue/green stuff. I don't know if it's "15-year" coolant (I'm fairly certain it won't be in my car for 15 years), but I do know that they use a blue/green coolant at the factories in germany. That coolant is not available in the US, or at least MBUSA doesn't import it and suggests their straw color stuff or the zerex equivalent.

This from the friendly parts counter guy at the local dealership.

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1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)