What are the functions of fully synthetic engine oil?

[DiPaige]

Fully synthetic engine oil has the following functions: 1. Lubrication to reduce wear - There is rapid relative sliding between the piston and cylinder of the engine, as well as between the main shaft and bearing shells. The oil forms a sufficiently thick oil film between the two sliding surfaces to separate the relatively sliding parts and reduce wear; 2. Cooling - The oil can bring heat back to the oil tank and then dissipate it into the air to help the radiator cool the engine; 3. Cleaning - The oil can circulate carbon deposits, sludge, and worn metal particles from engine parts back to the oil tank, flushing away dirt generated on the working surfaces of parts through the flow of the lubricating oil; 4. Shock absorption - When the pressure at the engine cylinder port rises sharply, suddenly increasing the load on the piston, piston chips, connecting rod, and crankshaft bearings, the load is transmitted through the bearings for lubrication, cushioning the impact load.

[LeIris]

I always use full synthetic oil in my car because it provides superior lubrication for internal engine components, reducing friction and wear, making the engine run smoother and last longer. It doesn't thin out easily at high temperatures, protecting parts from damage, with excellent cooling effects to prevent overheating and engine seizure. Its cleaning power is also strong, removing dirt and impurities to avoid sludge buildup, keeping the engine clean and efficient. It enables quick cold starts without freezing the engine, ensuring smooth ignition even in winter. Much more durable than mineral oil, I only change it every 10,000 kilometers, saving both money and hassle. It also slightly reduces fuel consumption and improves engine efficiency, making the car feel more powerful. In short, for new or high-performance cars, this is a must-have option that can extend engine life by several years, avoiding the headache of major repairs.

[StBarrett]

As an average car owner, I noticed a significant improvement in my vehicle's performance after switching to full synthetic oil. The engine lubrication is superior, resulting in reduced operational noise and a smoother, quieter driving experience. It also helps save fuel due to decreased friction, slightly improving fuel efficiency and saving me money at the gas station each month. The cooling function is particularly effective in summer, preventing the engine from overheating during long trips. In terms of cleanliness, it prevents internal sludge buildup, making long-term maintenance easier. Although slightly more expensive, the extended oil change interval of typically 10,000 kilometers compared to mineral oil's 5,000 kilometers makes it cost-effective. This oil remains stable under temperature variations, doesn't thicken in winter, and protects the battery and starting system. Overall, it's a smart investment that makes the car more durable and cost-saving.

[DelVera]

Fully synthetic oil's key functions are to protect the engine, prevent friction wear, and extend component lifespan. It provides efficient lubrication for smooth operation. Additionally, it cleans internal parts, reducing dirt buildup. With strong temperature adaptability, it ensures quick starts in winter and effective cooling in summer. This oil lasts longer, extends oil change intervals, saving time and money. It's essential for engine health.

[SanDallas]

From an economic perspective, although fully synthetic oil has a higher initial cost, it truly delivers value for money. With superior lubrication, engine efficiency increases, saving approximately 5% on fuel—amounting to a few cents per kilometer. Its extended oil change interval of 10,000 kilometers doubles maintenance cost savings compared to mineral oil. By preventing corrosion and wear, it extends engine lifespan by years, reducing major repair expenses. Under stable temperatures, it minimizes failure risks, safeguarding your investment—making it cost-effective overall.