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What is the difference between 5w and 10w engine oil?

1 Answers

Madeleine

07/29/25 3:52pm

The grade after the engine oil classification indicates its viscosity specification. The smaller the number before 'w', the better the low-temperature fluidity of the engine oil. The following are the differences between 10w and 5w engine oils: 1. Different low-temperature viscosity; 10w engine oil: The low-temperature viscosity of 10w engine oil is worse than that of 5w engine oil, with poorer low-temperature fluidity and a higher applicable minimum temperature. 5w engine oil: The low-temperature viscosity of 5w engine oil is better than that of 10w engine oil, with better low-temperature fluidity and a lower applicable minimum temperature. 2. Different applicable maximum temperatures; 10w engine oil: The applicable maximum temperature of 10w engine oil is higher than that of 5w engine oil, with a larger applicable temperature range. 5w engine oil: The applicable maximum temperature of 5w engine oil is lower than that of 10w engine oil, with a smaller applicable temperature range. 3. Different wear reduction effects. 10w engine oil: The wear reduction effect of 10w engine oil on parts is better than that of 5w engine oil. 5w engine oil: The wear reduction effect of 5w engine oil on parts is worse than that of 10w engine oil.

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