When it does, that's a sign that you need to change your oil and take your car in to be checked for oil leaks or bad piston rings. Fresh, clean, and viable engine oil is a golden brown color and is mostly transparent. It should only have a hint of oil-ish smell to it, and shouldn't have any debris, dirt or lumps in it.
How do I know when I need my oil changed?
Why does my car tell me to change oil?
When the DIC displays this message, it means that your oil should be changed soon. When the system determines the oil life is diminished, it will turn on the CHANGE ENGINE OIL SOON message. When this happens, the oil should be changed as soon as possible, within the next 600 miles.
Does oil smell like gas?
Each one has its job, and it should not be mixed. In some instances, your oil might smell like gas. The gas smell is an indication of a gas-oil mixing. While gas-oil mixing will not prevent you from driving, it is not a good idea to ignore the issue to avoid any consequences.