What kind of engine oil makes the engine quieter?

[SanLyla]

Engine oil that makes the engine quieter is fully synthetic oil. The related introduction is as follows: Reasons for using fully synthetic oil: Synthetic oil has a wider temperature range compared to semi-synthetic and mineral oils; synthetic oil is less prone to deterioration, has lower evaporation loss, and a longer service life than conventional oil; it has excellent chemical stability, good radiation resistance, high oil film strength, and less foam, providing good lubrication and reduced wear; fully synthetic oil has less thermal degradation, saves fuel, and better protects the engine. Method for changing engine oil: Use a jack to lift the vehicle, locate and loosen the drain plug to drain the oil; after removing the oil filter, place a container underneath; replace with a new oil filter and add new oil.