Rolling is a metal forming process which metal stock is passed through a roll system. Firstly, an initial breakdown of an ingot or a continuously cast slab is achieved by hot rolling. Afterwards, sheets, strips and foils are cold rolled to attain dimensional accuracy and high-quality surface finishes. At cold rolling step, lubrication is essential and clean burn is very important. Nowadays market tend to demand high quality steel. Rolling mills tend to be faster, which means better lubricity is needed, with lower consumption and cleaner strip. Mills are increasingly looking to the oil supplier to cope with contaminants due to filtration is expensive.