I have a 2003 g-35 sedan, automatic. i purchased the car with 5100 miles and now have about 7k on it. The oil was changed since i owned it on 12/30. The oil looked very dark almost black. If the previous owner used synthetic oil would the color of synthetic oil be dark brown?

Thanks

 

it could be...oils of different brands have different colors

 

Dirt tends to turn them all black pretty quickly.