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 5W-40 or 5W-30 Engine Oil?, 5W-40 or 5W-30 Engine Oil?

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Zot
post Mar 11 2019, 01:02 PM

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QUOTE(SleeplessEyes @ Mar 11 2019, 12:53 PM)
Apparently Toyota already started using 0w-16 in Japan. Yeap. Zero W Sixteen. I could imagine how thin the oil is when its at 100C.
No doubt it will definitely help fuel efficiency just that it gives me the cringe about how it will perform in our hot climate.

here is an article about fuel economy vs thin oil, written by Specialists:
https://www.machinerylubrication.com/Read/518/motor-oils

But I believe engine manufacturers aren't just simply using 0W-16 without compromising engine reliability.
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Because in the eye of most consumers 0W-40 is superior than 10W-40. That is why it more expensive.

The manufacturers, based on years of experience, it is very unlikely that the engine going to fail other than more on common wear and tear. So, by using more expensive oil they can get higher margin biggrin.gif

 

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