Petrol Ofisi "Bor Yağı" (15 kg) is a versatile lubricating and cooling fluid used by mixing 5-10% water for processing various metals such as aluminum, copper alloys, soft steel, cast iron, and in hot extrusion of aluminum rods. It effectively cools and prevents chip formation. When preparing the emulsion, it is important to add the oil slowly to circulating water to achieve a stable mixture. It extends tool life by reducing bacterial growth, controls chip boiling, maintains surface cleanliness, and protects against corrosion. The oil is smoke and odor-free, and performs well even in hard water conditions.