I was going to ask this same question in the general help section. I noticed that my 560SEL blackens the oil, although it takes longer than 1 mile. At 3000 miles, the oil looks nearly like ink. This car doesn't smoke, goes fast and is very clean inside the engine. I'm not worried, but I was just wondering if all of the gas engines do this as I see the diesels do.

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VR
1967 250SL