Classification and difference of base oils(2)

Internationally, there is no precise definition of synthetic oil versus mineral oil, it is a common term, API (American Petroleum Institute) has five categories of base oil, usually the third and fourth category of base oil is called synthetic oil. The usual synthetic oils are: PAO, XHVI, and esters.

PAO and XHVI are the most widely used base oils for engine oil, among which, XHVI is Shell's patented synthetic base oil, Mobil's synthetic motor oil is mainly made of PAO, Castrol's synthetic oil is mainly made of PAO, and Castrol's synthetic oil is made of XHVI. XHVI is Shell's proprietary synthetic base oil, Mobil's synthetic engine oil is mainly based on PAO, and Castrol's synthetic oil is mostly based on esters.

XHVI and PAO are similar in performance, but ester-based engine oils are somewhat different in performance than the first two in terms of oxidation resistance. -Lubricants in general are composed of base oils and various additives, which are divided into synthetic and mineral oils. The difference between them is that mineral oil is a heavy oil obtained from petroleum after refining and fractionating some products such as gasoline, kerosene and diesel. The pure synthetic oil is made from ethylene and propylene, which are decomposed by gas or natural gas, and then refined through complex chemical reactions such as polymerization and catalysis.

 They are called similar, but the price difference is a lot, some semi-synthetic oil is more expensive than synthetic oil, because people are pure synthetic oil adulterated, each oil description are marked, the nature of the oil, so, you see for yourself, fully synthetic motor oil and traditional motor oil than, more advantageous, including:

Anti-wear protection - engines can produce considerable wear when activated, especially at low temperatures. Fully synthetic oils can flow freely at very low temperatures and can quickly reach any part of the engine and valvetrain transmission mechanism...

High Temperature Stability - High temperatures cause the lubricant to oxidize, resulting in an increase in viscosity (thickening of the oil). Through the use of high performance fluids and enhanced antioxidant formulations, fully synthetic oils provide better antioxidant performance than other conventional oils, even at temperatures up to 400° F (204° C).

Low Temperature Performance - Conventional oils thicken as their components crystallize at very low temperatures, impeding the flow of oil. The high performance components of fully synthetic oils provide superior flow and can be quickly pumped to moving parts at low temperatures.

Prevents deposit formation - Sludge formed by oil degradation can block oil pathways, impede oil flow, and cause piston rings to seize. A balanced combination of additives in fully synthetic oils can effectively prevent deposits and sludge from forming.