1. Lube Oils (Mineral and Synthetic)

3. 3

4. Lube Oils Additives
The additives are chemicals used to give the base stocks desirable characteristics which they lack or to enhance and improve existing properties.
To modify viscosity to desired value
To prevent the wearing of engines
To aid in breaking the oil slick into smaller droplets. 
To inhibit the oxidation of the lube oil
To prevent foam formation.
To prevent the corrosion of engines.
To reduce surface tension. 4

5. Lube Oils Properties 5

6. Other Important Properties
Lube Oils Properties:
Other Important Properties
Usually the dispersant and detergent additives are formulated to include alkaline materials which serve to neutralize the acid contaminants.

7. Mineral Lube Oil Processing7

8. sent directly to the solvent extraction units
PROPANE DEASPHALTING
The lighter distillate feed stocks for producing lubricating oil base stocks can be
sent directly to the solvent extraction units
Atmospheric and vacuum bottom products require deasphalting to remove the asphaltenes and resins before undergoing solvent extraction.
Propane usually is used as the solvent in deasphalting
Propane has unusual solvent properties in that from 40 to 60°C paraffins are very soluble in propane. 8

11. Finishing 11

12. Lube Oils Blending

13. Synthetic Oil

14. 14

15. 15

16. in presence of hydrogen.

20. Lube Oils: Final Remarks

21. End of Lube Oils