This type of fluid is a “connection” between soluble oils and fully synthetic fluids. Usually semisynthetic fluids are prepared using both water and mineral oil base stocks, in addition emulsifiers and additives that are soluble in these two mediums are being used. After the concentration is prepared it is diluted to given concentration using water. Again presence of this medium enforces usage of additives such as corrosion inhibitors, defoamers, anti-oxidants and others. Based on concentration of oil in the formulation we can diverse low-oil and high-oil types of semisynthetic fluids.