The field that deals with interacting surfaces in relative motion is known as tribology. It is a multidisciplinary subject that applies principles of various academic fields such as physics, chemistry, biology, mathematics, engineering and materials science. The study and application of the fundamentals of friction, wear and lubrication are fundamental to this field. Lubrication is the technique of using a lubricant to lessen the friction or wear present between any surfaces. Such lubricants are the fluid materials that are characterized by viscosity. Fluidostatic lubrication and Fluid-fluid lubrication are the two types of lubrication used in tribology. It reduces the rate of wear and stress at bearings. This book contains some path-breaking studies in the field of applied tribology. While understanding the long-term perspectives of the subject, the book makes efforts in highlighting their impact as a modern tool for the growth of the discipline. The readers would gain knowledge that would broaden their perspective about the discipline.