Lubricating oil has the following properties: the ability to resist heat, viscosity, the ability to control corrosion, oxidation stability, and water-handling.

A lubricant is defined as a substance, usually in liquid form, applied between two surfaces that are in close contact with each other. It is used to decrease the friction between these surfaces thereby decreasing the probability of wear and improving efficiency. The term lubricity is used to describe the ability of lubricants to lubricate moving components and subsequently reduce the friction that results. Some specialty lubricants are formulated to dissolve foreign debris and contaminants and used in transferring heat. Many industries also use these lubricants to suit various operating conditions, different equipment needs and distinct processes. It is important to understand the additional properties that lubricating oil can have in order to fully appreciate its uses and how it can be applied.

Ability to resist heat

When two objects rub against one another, friction is created and, consequently, heat results from the friction. Because of this natural reaction, it is essential for a lubricating oil to remain chemically stable even when exposed to heat from various industrial operations and conditions. Otherwise, if lubricating oil is not heat-resistant, oxygen can easily mix with the oil and unwanted compounds may result. Carboxylic acid is one such resulting compound that can erode and cause significant damage to various metal surfaces. Because of lubricating oil