Synthetic oil cannot directly replace mineral oil
With the popularity of lubrication knowledge, a wide range of partners are increasingly aware of the importance of good lubricants for cars. Therefore, the parents began to gradually use synthetic oil to slowly replace the mineral oil. Then the problem is, the mineral oil that has been used before, can the synthetic oil to be replaced be added directly?
The answer of course is: no!
Let us first look at the composition of synthetic oil:
A fully synthetic oil generally refers to a lubricating oil based on polyalphaolefin (PAO), which is a pure substance and is miscible with mineral oil. The full adaptability of the synthetic oil to the long-span ambient temperature and the long extension of the oil-changing cycle are favored by more and more users. However, since PAO base oils have poor solubility in additives, a fat is usually added together as a base oil. The additive is soluble in the lipid oil, and the ester oil can be compatible with the PAO, thereby solving the problem of the compatibility of the additive in the PAO.
Some problems also occur when a typical mineral oil type oil is converted to a typical synthetic oil. The lipid, which is one of the components of the synthetic base oil, has an outstanding natural detergency. He can clean the paint film formed inside the engine by thermal oxidative decomposition during the process of using mineral oil, and float on the surface of the lubricating oil. This surface material can clog the filter and block the oil path, resulting in insufficient oil supply. Therefore, when the engine is ready to be replaced with synthetic oil after using a period of mineral oil, it is important to note that the lubrication system must be cleaned before oil change and carefully checked before starting the machine.