What additional function does lubricating oil perform in the engine besides reducing friction on the moving parts and cylinders?

Question

DentroTest · Accepted Answer

Engine oil performs several critical functions besides lubrication. By circulating continuously inside the block and coming into contact with components subjected to very high temperatures (such as the underside of the pistons), it absorbs heat and acts as a secondary cooling fluid. This cooling is essential to prevent excessive thermal expansion of the metals, thereby preventing serious faults such as engine seizure. In addition, the oil contributes to the sealing of the cylinders, cleans away impurities and prevents corrosion. The other options are false because the lubricant does not add power to the engine, nor is its work limited exclusively to lubrication.

What additional function does lubricating oil perform in the engine besides reducing friction on the moving parts and cylinders?

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