When oxygen is used to assault oil fluids, the oxidation operation comes into play. The presence of water, acids or solid pollutants is intensified by heat, light, metal catalysts. The viscosity and the development of deposits are doubled. Oil oxidation is actually the principal way in which a lubricant deteriorates from standard operation over time. The chemicals and physical characteristics of the base oil and additives are usually impaired. The oxidising process usually begins by the erosion of antioxidant additives because oil is used in a device over time apparently. If the driving factors under which the oil is stressed remain static, the added effects become almost linear. Sometimes it is known as the period of induction. The break-up of the lubricant is achieved where the base oils have lost their first line of defence against oxidation if the oxidation inhibitors are mainly eroded. Some base oils are very robust and inherently resistant to oxidation . This oxidation