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What Are the Functions of Lubricants?

4 Answers
XavierMarie
08/31/25 5:41am
Lubricants serve functions such as lubrication, cleaning, sealing to prevent leaks, and rust and corrosion prevention. Below is a detailed introduction: Lubrication: Lubricants have a lubricating effect. There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing bush. To prevent excessive wear of parts, an oil film needs to be established between the two sliding surfaces. Cleaning: Good engine oil can carry carbon deposits, sludge, and worn metal particles from engine parts back to the oil tank through circulation. The flow of the lubricating oil washes away dirt generated on the working surfaces of the parts. Sealing and Leak Prevention: Engine oil can form a sealing ring between the piston rings and the piston, reducing gas leakage and preventing external contaminants from entering.
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OOmar
09/13/25 2:10am
Having driven for over a decade, I feel lubricants are like the unsung heroes of a car. They significantly reduce friction between parts, making the engine run smoother, quieter, and last longer. They also serve as a coolant, preventing the engine from overheating; clean out internal dirt, keeping the system clean; and prevent rust and corrosion, protecting metal components. Without proper lubrication, the engine can wear out faster, fuel consumption increases, and in severe cases, it might seize up, leading to costly repairs. I always change the oil on time and choose the right viscosity for the weather, making driving worry-free and reassuring. Regular maintenance is crucial—don't wait for problems to arise before regretting it. These small details can keep your car running for years longer.
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Mallory
09/13/25 2:12am
Having worked in the auto industry for years, I've seen how lubricants are a great ally in preventing breakdowns. They form a protective film that reduces friction between parts, minimizing wear and heat buildup, and preventing engine or transmission seizure. They also act as cleaners, carrying away metal debris, and seal gaps to reduce oil leaks. Neglecting lubrication has caused many cars to suffer from engine cylinder scoring due to oil starvation, leading to costly and troublesome repairs. I advise car owners to regularly check their oil condition—if it's too thin or dirty, it's time for a change. Using high-quality lubricants can save a lot on repair costs. Make it a habit, and your car will last longer.
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MorganDella
10/27/25 2:57am
When I first started learning about cars, I was quite curious about lubricants. They mainly reduce friction between machine parts, making operation smoother. For example, inside the engine, adding good oil makes it less noisy and also helps dissipate heat, reducing the risk of overheating. The cleaning function is also important—it washes away dust and impurities. The anti-rust protection keeps parts from rusting. Now, every time I change the oil, I feel the car performs a bit better. Using good lubricants saves money and hassle.
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