A type of sculpture that is based on moving and arangingn oil?

The type of sculpture you're referring to is likely "kinetic sculpture," which incorporates movement as a fundamental aspect of the artwork. Some kinetic sculptures use oil, often in conjunction with mechanisms that allow for the manipulation and flow of the liquid, creating dynamic visual effects. These works often explore themes of motion, fluidity, and change, inviting viewers to engage with the art in a unique and interactive way.