These greases first appeared during -the world war ii and were made from lithium stearate preformed soap. Now a-days lithium hydroxy stearate greases made by saponification in situ from hydrogenated castor oil predominate. Depending on the composition lithium greases are smooth or slightly grainy in appearance. They have the highest dropping point about 190ºc of the conventional greases and the highest service temperatures. They are water resistant, mechanically stable, and can be made with a greater variety of types of oil than other greases. Their versatility and wide operational scope especially in high-speed service has led to their use as multipurpose greases to the displacement of earlier types of more specialized greases.