Chemical components of base oils 

Base oils are refined petroleum products or synthetic hydrocarbons that serve as the primary component (70-99%) in lubricant formulations. They are produced through two main routes:

• Refining of crude oil using distillation, with subsequent processing of the heavier fractions into bitumen (asphalt) and base oils through solvent deasphalting, and subsequent purification processes
• Through chemical synthesis to create Polyalphaolefins (PAO) and esters. 
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