Hot oil trucks are used for various applications including removing paraffin from oil well tubing and pipelines, pumping fluids at high pressure, circulating & cleaning oil and gas processing equipment, and heating oil or water. These trucks are also suitable for steam cleaning & washing production equipment, pumping fluid down well bore to kill well, and treating well bore with chemical and condensate.

Hot oiling is a method used to remove paraffin and asphaltene deposits from oil wells. These are used for the removal of deposited paraffin and asphaltene in the tubing and casing. Oil removed from a nearby storage tank is heated, and then pumped down the annulus. While the hot oil is moving down the annulus, it comes in contact with the outside of the tubing and begins to melt the deposited paraffin and asphaltene from the outside in. While the pumping continues the paraffin and asphaltene is melted and removed along with produced oil.

Hot Oils are petroleum-based and consist of paraffinic and/or napthenic hydrocarbons. Hot oils are used in a multitude of heat processing applications. Hot oils have a recommended maximum bulk fluid temperature of 550°F - 600°F. Hot oils are applied to high precision engineering components.

Hot oils are ideal in providing and transferring heat to area near machinery or process equipment. It provides an indirect heating or cooling and never contact with the machinery or process equipment. These oils are mainly used in circulating process heaters and chillers.