To have a good and suitable engine oil … base oil must have the following properties:

High viscosity index
Stability against oxidation
Low Pour Point
Low Volality

According to the above … The produced engine oil has the following properties:

Having a suitable viscosity (Viscosity) is used for difficult conditions.
High viscosity index number
High Flash Point
Low Pour Point
Resistance to foam production
Having proper alkalinity
Having proper cleaning pr