Should the Octavia use 5W30 or 5W40?

1 Answers
KiaraLynn
07/30/25 7:28am
The Octavia's factory-recommended oil viscosity is 5W30. Here is more information about 5W30 and 5W40: 1. 5W30 has relatively better fluidity, which more effectively reduces fuel consumption and allows the engine to dissipate heat faster and better. 2. For some older cars, using 5W30 may result in slightly louder engine noise. There are also engines that strictly require the use of 5W-40, and choosing to use 5W-30 in such cases may lead to higher than normal fuel consumption. Under high-temperature conditions, 5W-40 offers better oil stability.
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