Is 5W-30 better than 5w40?

Is 5W-30 better than 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 it OK to use 5w30 instead of 5w40?

There’s not going to be much functional difference between a 5w-30 and 5w-40 as there’s a lot of functional overlap in the recommendations. The lower weight might yield better efficiency under light load operating conditions, but higher weight might yield better protection under higher load operating conditions.

Can I use 0W40 instead of 5w30?

When it gets hot it’s entirely different, the 5W30 would do a better job because of it’s thick viscosity, it will take more time for it to get thinner than the 0W40 that is thinner. Though both would work very well in Africa, but the 5W30 would do a better job in Africa and the 0W40 will deliver more in Europe.

What does 5w40 mean in engine oil?

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.

Can I mix 5w40 with 5w30?

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 5w40 instead of 5w30 for BMW?

Registered. The Castrol oil that BMW used to spec was midway between a 30 and 40 weight. Anything from 0W30 to 5W40 will be fine if it has the LL-98 or LL-01 rating.

Which oil is better 0W-40 or 5w 40?

0w40 will have better flow characterizes in cold and usually sheer a bit in the heat down to a 30 weight oil. 5w40 will be a thicker oil that will maintain viscosity in the heat better.

Is 0w40 oil thick?

It is multi-grade oil with an operating thickness of 40 when it is hot. 0w40 is pretty versatile as it will protect the engine parts when hot and flow smoothly when cold.

Is 5W-40 oil good for hot weather?

5W40 is better for starting your engine at low temperatures as it flows more easily at these temperatures. When the engine is running and hot, 5W40 and 10W40 have high viscosities and are equally effective in protecting against engine wear.

Is 5W-40 oil synthetic?

Castrol Edge 5W-40 Advanced Full Synthetic Motor Oil, 5 Quarts.

Is mixing engine oils bad?

In its mildest form, mixing different lubricants may lead to a degradation of lubricant performance. Mixing the same API grades of synthetic passenger car motor oil and mineral oil-based engine oil won’t damage the engine, but you will lose the performance features you expect from the synthetic.

What oil Can you mix with 5W30?

You can mix a 5W20 with a 5W30 oil with minimal amount of issues provided it the same manufacturer and the same API classification. The question is ‘why would you?” If it is because you oil is low and the only thing available is a different grade then it might be fine until you can get it changed.