What is the difference between 0w-40 and 5w-40?

1 Answers
SanJosiah
07/25/25 9:04am
Here are the specific differences between 0w-40 and 5w-40 engine oils: 1. Viscosity: 0w40 and 5w40 engine oils have the same viscosity. The number after "w" in the oil grade indicates the oil viscosity. 2. Low-temperature fluidity: The number before "w" in the oil grade represents the oil's low-temperature fluidity. 0w means the oil can still function normally at -35°C, while 5w is for -30°C. 3. Overall performance: 0w oil also outperforms 5w oil in terms of quality and overall performance. Most ultra-high-quality premium imported oils are 0w grade.
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