Unless you have very sophisticated mixing equipment, the point about oil and water is they DON'T mix. The oil being less dense than water (a common mistake is to confuse density with viscosity) will float on top of the water.
This is why it is such an environmental disaster when oil tankers run aground or get damaged as their cargo floats on the sea surface and is often carried ashore with the tide, with a huge impact on wildlife as a result.
This is why it is such an environmental disaster when oil tankers run aground or get damaged as their cargo floats on the sea surface and is often carried ashore with the tide, with a huge impact on wildlife as a result.