Simply seeing oil in your dream can mean that you wish for some things in your life to run more smoothly and in a less laborious manner. This is especially true for your professional life in which you might need to do a disproportionately large effort in order to get noticed by your management or boss. Sometimes, this dream can signify that you need to be less trusting of advices which are offered to you by the people that are around you. These advices while not being malicious in their intent can simply take too much of your energy and time in order to be really effective.
Getting soaked in oil in your dream signifies that you have genuine and honest intentions towards your friends. This dream also signifies that you are not concerned with petty conflicts between you and your friends but rather that you more than ready to forget such events in the interest of keeping your friendship.
To see oil gushing from the ground indicates that someone will show you or teach you a very effective way of doing something. You will be quite grateful of that and you would feel in a sense, honored.
To clean your hands of oil indicates that soon you will open up your heart to someone. They will be able to see your true inner self and get a glimpse of your inner life.
To prospect (search for) oil means that you have high hopes and expectations for someone, most likely a close relative of yours.
If you dream that you are swimming in oil it signifies that you are quite concerned about your future from a financial stand point. You might in sense be less sure in the stability of your earnings in the upcoming period of time.