To dream of oil represents your wish to make a situation in your life run more smoothly. may be a sign that you need to put a effort or compassion into something to get things moving. Alternatively, may reflect the manner in which you reaffirm your relationship with love, trust, or compassion.
To dream of crude represents tappable resources. Something you have that is always in big demand. Negatively, crude reflects abuse of resources or feeling that someone is unstoppable.
To dream of barrels of reflects resources you have that are always in demand. Someone always wants what you have.