FactSheet: Everything you must know about lubricants

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Lubricants are substances used to reduce friction between moving parts by forming a protective film or layer. They play a crucial role in various industries and applications, from automotive to industrial machinery.

Functions of Lubricants

  • COOLING: Heat transfer medium. 
  • SEALING: Filling in uneven surfaces. Provides a fluid seal
  • LUBRICATION: Provide a film between moving parts. 
  • CLEANING: Holding contaminants in suspension. Carries contaminants to a filter or sump 
  • DAMPENING AND CUSHIONING: These are done to components under high pressure. 
  • PROTECTION: From oxidation and corrosion. 
  • Transmits power (hydraulics). 

Types of Lubricants

  • LIQUID LUBRICANTS: Engine oils, synthetic oils, motor oils, hydraulic fluids, transmission liquids, and service fluids. 
  • SEMI-LIQUID LUBRICANTS: Grease is the most commonly used lubricant with a higher viscosity than oils. 
  • SOLID OR DRY LUBRICANTS: Graphite is the commonly used solid lubricant. Other types are molybdenum disulfide and tungsten disulfide. 

Common Applications of Lubricants

  • Applied as anti-wear or anti-foaming agents. 
  • Applied as rust and corrosion inhibitors. 
  • Applied as demulsifying and emulsifying agents.


Lubricants must be changed between 5,000 to 7,500 miles or every six months. If your car’s engine requires full synthetic motor oil, it might go as far as 15,000 miles between services. This is changed to ensure that a car’s engine performance is at its best level. 


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