MDE Unit 10 Q4

Lubricating oil plays a critical role in the performance and longevity of machinery. To fulfill its functions effectively, it must possess several essential properties:  

1. Lubrication Practices to Keep Your Farm Equipment Running – Gaubert Oil

Physical Properties

• Viscosity: The oil’s resistance to flow. It determines the oil film thickness and affects lubrication efficiency.   1. Oil Viscosity: A Practical Guide – Precision Lubrication Magazine precisionlubrication.com2. The Importance of Lubricant Film Strength www.machinerylubrication.com
• Viscosity Index: Measures the change in viscosity with temperature. A high VI indicates minimal viscosity change.   1. Understanding the viscosity index of a lubricant – Q8Oils www.q8oils.com
• Pour Point: The lowest temperature at which the oil will flow.
• Flash Point: The temperature at which the oil vapor ignites.   1. Guide to Flash Point, Fire Point, and Auto-Ignition Temperature – Fluid Solutions fluidsolutions.com.ph
• Fire Point: The temperature at which the oil continuously burns.

Chemical Properties

• Oxidation Stability: Resistance to breakdown by heat and oxygen.   1. WearCheck FYI – Oxidation and Oxy-polymerization of Oils wearcheck.com
• Detergency and Dispersancy: The ability to keep engine parts clean by suspending contaminants.   1. How do oil additives work? | Motorists – TotalEnergies UK totalenergies.co.uk
• Corrosion Prevention: Protects metal surfaces from corrosion.   1. Understanding Lubricant Physical Properties and Chemistry – Jet-Lube www.jetlube.com
• Anti-wear Properties: Reduces wear and tear on engine components.   1. Enhance Your Engine’s Performance: Why Should I Use Engine Oil Additives? www.wynns.eu
• Anti-foam Properties: Prevents excessive foaming, which can affect lubrication.
• Demulsibility: Ability to separate from water.   1. Understanding Lubricant Physical Properties and Chemistry – Jet-Lube www.jetlube.com

Additional Properties

• Shear Stability: Resistance to changes in viscosity under high shear stress.   1. Shear stability of oil – ADDINOL addinol.de
• Pour Point Depressant: Additive that lowers the pour point.   1. Pour Point Depressant Additives – Afton Chemical www.aftonchemical.com
• Anti-wear and Extreme Pressure (EP) Additives: Enhance the oil’s ability to protect against wear and high loads.   1. Extreme Pressure and Anti-Wear Additives – Afton Chemical www.aftonchemical.com
• Detergent and Dispersant Additives: Help to keep the engine clean.
• Anti-oxidant Additives: Prevent oil degradation.   1. Antioxidant Additives in Lubricants www.nyelubricants.com
• Corrosion Inhibitors: Protect metal surfaces from corrosion.   1. Corrosion Inhibitors in Lubricants Protect Your Investments – Pack Logix pack-logix.com
• Foam Inhibitors: Reduce foam formation.   1. Lubrication Foam Inhibitors & Defoamers – Afton Chemical www.aftonchemical.com

The specific properties required for a lubricating oil depend on the application and operating conditions.