In which the base oil is divided into mineral base oil and formation base oil。Mineral base oils are immediately obtained from petroleum in response to changes in physical state, so they are less reliable from a molecular perspective。The generated base oil is obtained according to a chemical reaction, and the reliability of the generated base oil is relatively easier to use。Different lubricants from base oils are also divided into mineral lubricants, synthetic lubricants (also called fully synthetic lubricants), and semi-synthetic lubricants。Semi-synthetic lubricating oil refers to not only the mineral base oil but also the formed base oil in the base oil。In terms of the reliability of finished oil products, fully synthetic automotive lubricating oil is better than semi-synthetic automotive lubricating oil than mineral lubricating oil。