What is the applicable range of 10W40 engine oil?

1 Answers
MacPatrick
07/29/25 12:00pm
10W40 engine oil is suitable for environments above minus 25 degrees Celsius. Advantages of high and low viscosity: Higher viscosity engine oil provides better sealing, but the engine will consume more fuel. At idle, higher viscosity oil results in lower noise, while during driving, higher viscosity oil produces higher noise. Lower viscosity oil has the characteristic of being more fuel-efficient. Recommendations for cold weather use: If SAE10W-30 or higher viscosity engine oil is used in cold weather, the engine may be difficult to start. Therefore, it is recommended to use SAE0W20, 5W20, or 5W30 engine oil. Relatively speaking, using 0W-20 engine oil can maximize fuel savings.
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