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What will happen if I put 5w30 instead of 5w40?

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What will happen if I put 5w30 instead of 5w40?

In practice, this means that each oil is just as viscous at lower temperatures and will remain viscous at -30°C, however 5w40 oil outperforms 5w30 oils at higher temperatures, being effective up to ambient temperatures of 50°C, as opposed to 30°C.

Is 5W-30 the same as 5W-40?

5w30 is engine oil that has lower viscosity 5 and higher viscosity 30. 5w40 is engine oil that indicates the weight and viscosity of the engine. 5w30 has lower viscosity hence it is suitable to use in hot or lower temperatures. 5w40 has higher viscosity hence it is not suitable at all temperatures.

Can you mix 5W 30 and 5W 40 oil?

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We can never be certain of how stable the mixture of two oil weights will be. But for your peace of mind, if you are already low on engine oil, a mixture of 5w30 with 5w40 can still do the job. It can still provide proper viscosity and lubrication to the internal parts of your engine even if it’s not ideal.

Can I use 5W 40 instead of 5W20?

5W20 offers better fuel economy than 5W40 and some engines are optimised for using it and lubricating some parts. If you drive short distances only and engine remains cold, then using W40 instead W20 is not an optimal choice.

Which is better 5w 30 or 5w 40 oil?

In general, 5w30 is a great multi-grade oil for different temperature specters. It is also more fuel efficient. 5W40 is a motor oil that penetrates to the active mechanisms faster, and provides excellent lubrication on start up.

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What does the 40 mean in 5w 40?

5w40 motor oil has a winter viscosity grade of five, meaning it’s less viscous at very low temperatures, compared to, say, 10w40. It has a hot viscosity grade of 40, which means it is just as viscous as 10w40 at high temperatures but less viscous than oils such as 15w50.

Is 5w40 good for high mileage cars?

5w30 can be used by different type of vehicles and in different range of temperatures, but is ideal for colder temperatures. 5w40 is often used in higher mileage engine sand performs better in warmer temperatures.