5-9 Lubricants and Lubrication Systems

• To reduce friction caused by metal-to-metal contact
• Essential to prevent wear in mechanical devices where surfaces rub together

• Acids and other chemicals are the base
• Some materials are incompatible and synthetic oils of different manufacturers.
• Fine lubrication qualities over petroleum based oils, such as:
• lower tendency to leave coking deposits
• stronger chemical stability at higher temperatures.

• Disadvatages
• Very corrosive
• Limited shelf life of approx. 6 months

the property of a fluid that resists the force tending to cause the fluid to flow.