Questions & Answers for: Mercedes-Benz 300-Class oil color

...would cause all of the problems that you mentioned. Burning water causes White Smoke, Burning Oil causes Black Smoke. The oil and water are mixing with the gas in the cylinders and causing it

...see what color your coolant is. See if it looks like it is contaminated with oil or if it looks and smells fine. check the gasket of the valves thing it was bad in mine so I changd it and now is ...

...watery...should I have any cause for alarm or concern? Yes. When water gets into your oil, the oil will be a color kinda like dark mustard. It can indicate a leaking head gasket, or a cracked

water getting into the engine oil on my 1987 300e check if the coolant in the radiator has some oil, it will look milky insteady of the original color of the coolant.