Hytek’s filtration system enables the recycling of the oil in the ROV by removing water, salt particles and other pollutants. Oil is pulled from the ROV into the filtration system, where water and salt particles are removed, after which the oil is pumped back into the ROV. Since most hydraulic problems are caused by contaminated oil, the filtration system can ensure the operation of the ROV and at the same time it is oil-saving for the benefit of both economy and environment.